RESUMO
BACKGROUND: As the increased consumption of ready-to-eat meat alternatives is a fairly recent trend, little is known about the composition and dynamics of the microbiota present on such products. Such information is nonetheless valuable in view of spoilage and food safety prevention. Even though refrigeration and modified-atmosphere-packaging (MAP) can extend the shelf-life period, microbial spoilage can still occur in these products. In the present study, the microbiota of a vegetarian alternative to poultry-based charcuterie was investigated during storage, contrasting the use of a culture-dependent method to a culture-independent metagenetic method. RESULTS: The former revealed that lactic acid bacteria (LAB) were the most abundant microbial group, specifically at the end of the shelf-life period, whereby Latilactobacillus sakei was the most abundant species. Metabarcoding analysis, in contrast, revealed that DNA of Xanthomonas was most prominently present, which likely was an artifact due to the presence of xanthan gum as an ingredient, followed by Streptococcus and Weissella. CONCLUSIONS: Taken together, these results indicated that Lb. sakei was likely the most prominent specific spoilage organisms (SSO) and, additionally, that the use of metagenetic analysis needs to be interpreted with care in this specific type of product. In order to improve the performance of metagenetics in food samples with a high DNA matrix but a low bacterial DNA load, selective depletion techniques for matrix DNA could be explored.
Assuntos
Bactérias/crescimento & desenvolvimento , Código de Barras de DNA Taxonômico/métodos , Código de Barras de DNA Taxonômico/normas , Microbiologia de Alimentos/métodos , Armazenamento de Alimentos/normas , Produtos da Carne/microbiologia , Vegetarianos , Atmosfera , Bactérias/classificação , Bactérias/genética , Bactérias/isolamento & purificação , Contagem de Colônia Microbiana , Código de Barras de DNA Taxonômico/estatística & dados numéricos , Microbiologia de Alimentos/normas , Embalagem de Alimentos/métodos , Embalagem de Alimentos/normas , Armazenamento de Alimentos/métodos , Armazenamento de Alimentos/estatística & dados numéricos , Produtos da Carne/classificação , RNA Ribossômico 16S/genética , RefrigeraçãoRESUMO
Craft chocolate is a relatively new and fast-growing segment of the American chocolate market. To understand American premium chocolate consumer perception of craft chocolate and desirable chocolate product attributes, we conducted a mixed-methods study using focus groups and projective mapping. Projective mapping revealed that participants segmented products in terms of quality based upon usage occasion rather than cost or other factors. We found that American premium chocolate consumers use search attributes such as segmentation, price, availability, and packaging as quality determinants. Additionally, they desire credence attributes that convey trust through, for example, the presence or absence of sustainability certifications, or a semblance of meaning. Premium chocolate consumers seek out experience attributes such as utility and/or joy, which are achieved by purchasing a chocolate product as a gift, for its nostalgic purposes, or for desired post-ingestive effects. We propose a Desirable Chocolate Attribute Concept Map to explain our findings.
Assuntos
Chocolate , Comportamento do Consumidor/estatística & dados numéricos , Grupos Focais/estatística & dados numéricos , Preferências Alimentares/fisiologia , Percepção/fisiologia , Paladar , Cacau/química , Cacau/normas , Comportamento de Escolha/fisiologia , Comportamento do Consumidor/economia , Grupos Focais/métodos , Embalagem de Alimentos/economia , Embalagem de Alimentos/métodos , Embalagem de Alimentos/normas , Preferências Alimentares/psicologia , Humanos , Estados UnidosRESUMO
Production and consumption of olive oil is very important in Europe, being this product a basic element in the Mediterranean diet since long ago. The project objective is two-fold: a study of the contribution of virgin olive oils (VOOs) usual packaging to the whole life cycle of the product and a study of the environmental consequences of the Spanish Government regulation on VOO packaging. A life cycle assessment (LCA) according to ISO 14044 has been performed using the CML methodology for the impact assessment. The results show that the packaging influence varies from 2 to 300%, depending on the impact category and type of packaging (glass, tin or polyethylene terephtalate). Glass, which is related to higher quality perception by consumers, was found to be the most influencing material (due to its weight); however, this impact may be fairly reduced by applying ecodesign strategies (such as weight reduction and recycled-glass percentage increase). A new Spanish regulation on the mandatory use of non-refillable oilers in HORECA establishments (hotels, restaurants and caterings) aims to provide more quality assurance and better information to consumers; however, it was also found to mean a 74% increase in greenhouse gases emissions. This regulation was deeply discussed at European level and its application was withdraw due to consumers rejection, except for Spain. The findings of the present case study show that LCA and ecodesign should be important tools to be promoted and applied in policy making to reduce non-desirable consequences of regulation.
Assuntos
Poluição Ambiental/prevenção & controle , Embalagem de Alimentos/métodos , Regulamentação Governamental , Azeite de Oliva , Reciclagem/legislação & jurisprudência , Poluição Ambiental/legislação & jurisprudência , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/normas , Reciclagem/métodos , Medição de Risco , EspanhaRESUMO
Nanotechnology applications in the food industry, including food contact materials, offer many potential benefits for consumers and manufacturers alike. The article discusses the migration of nanoparticles from food contact materials and the possible health risks associated with in the context of insufficient knowledge of the potential exposure to nanomaterial. The importance of gaps in the general knowledge on the behaviour and biological interactions of nanomaterials in biological systems becomes crucial for risk assessment. The article also discussed numerous doubts concerning the measurements of biological reactions in animal tests and the need for new approaches in the interpretation of data from nanoparticles studies in vivo. The article underlines the need to develop predictive and validated toxicological tests that can be used to screen for potential hazards, and also to develop new methodology for measuring nanoparticles in biological matrices to assess human exposure. Further studies should focus on understanding the mechanisms of action. Nanoparticles exhibit chemical and physical properties that significantly differ from those substances at a large size. Different properties of nanoparticles may lead to different toxicological properties. From that reason nanoparticles, in each case, are individually assessed by the European Food Standard Agency (EFSA) in terms of health risk before the European Commission authorizes them to be used in food contact materials.
Assuntos
Exposição Dietética/normas , Contaminação de Alimentos/prevenção & controle , Embalagem de Alimentos/normas , Nanoestruturas/normas , Qualidade de Produtos para o Consumidor , Exposição Dietética/análise , Contaminação de Alimentos/análise , Humanos , Nanoestruturas/efeitos adversos , Nanoestruturas/análise , Tamanho da Partícula , Polônia , Medição de RiscoRESUMO
In this paper, I first provide definitions of nutrient profiling and of a nutrient profile model. I set out the purposes of nutrient profiling: both general and specific. I give two examples of nutrient profile models that have been developed for regulatory purposes by the Food Standards Agency (FSA) in the UK and the WHO for its European Region - the UK FSA/Ofcom and the WHO-Euro models - and compare the way the models are constructed and function, how they have been developed, the extent to which they have been tested and validated and their use in regulation. Finally I draw some conclusions about the future use of nutrient profiling for regulatory purposes. I argue that its full potential has yet to be realised and give some reasons why. I pose some urgent research questions with respect to nutrient profiling.
Assuntos
Dieta Saudável , Embalagem de Alimentos , Alimentos em Conserva/efeitos adversos , Indústria de Processamento de Alimentos , Promoção da Saúde/métodos , Modelos Biológicos , Adolescente , Adulto , Pesquisa Biomédica/métodos , Pesquisa Biomédica/tendências , Criança , Fenômenos Fisiológicos da Nutrição Infantil , Congressos como Assunto , Dietética/métodos , Dietética/tendências , Europa (Continente) , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/normas , Alimentos em Conserva/normas , Indústria de Processamento de Alimentos/legislação & jurisprudência , Indústria de Processamento de Alimentos/tendências , Promoção da Saúde/tendências , Humanos , Ciências da Nutrição/métodos , Ciências da Nutrição/tendências , Valor Nutritivo , Sociedades Científicas , Nações UnidasRESUMO
Nutrient profiling (NP) models rate the nutritional quality of individual foods, based on their nutrient composition. Their goal is to identify nutrient-rich foods, generally defined as those that contain more nutrients than calories and are low in fat, sugar and salt. NP models have provided the scientific basis for evaluating nutrition and health claims and regulating marketing and advertising to children. The food industry has used NP methods to reformulate product portfolios. To help define what we mean by healthy foods, NP models need to be based on published nutrition standards, mandated serving sizes and open-source nutrient composition databases. Specifically, the development and testing of NP models for public health should follow the seven decision steps outlined by the European Food Safety Authority. Consistent with this scheme, the nutrient-rich food (NRF) family of indices was based on a variable number of qualifying nutrients (from six to fifteen) and on three disqualifying nutrients (saturated fat, added sugar, sodium). The selection of nutrients and daily reference amounts followed nutrient standards for the USA. The base of calculation was 418·4 kJ (100 kcal), in preference to 100 g, or serving sizes. The NRF algorithms, based on unweighted sums of percent daily values, subtracted negative (LIM) from positive (NRn) subscores (NRn - LIM). NRF model performance was tested with respect to energy density and independent measures of a healthy diet. Whereas past uses of NP modelling have been regulatory or educational, voluntary product reformulation by the food industry may have most impact on public health.
Assuntos
Dieta Saudável , Embalagem de Alimentos , Alimentos em Conserva/efeitos adversos , Indústria de Processamento de Alimentos , Promoção da Saúde/métodos , Modelos Biológicos , Prática de Saúde Pública , Adolescente , Fenômenos Fisiológicos da Nutrição do Adolescente , Adulto , Pesquisa Biomédica/métodos , Pesquisa Biomédica/tendências , Criança , Fenômenos Fisiológicos da Nutrição Infantil , Congressos como Assunto , Dietética/métodos , Dietética/tendências , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/normas , Alimentos em Conserva/normas , Indústria de Processamento de Alimentos/legislação & jurisprudência , Indústria de Processamento de Alimentos/tendências , Promoção da Saúde/tendências , Humanos , Avaliação das Necessidades , Ciências da Nutrição/métodos , Ciências da Nutrição/tendências , Valor Nutritivo , Sociedades CientíficasRESUMO
Nutrient profiling aims to classify or rank foods according to their nutritional composition to assist policies aimed at improving the nutritional quality of foods and diets. The present paper reviews a French approach of nutrient profiling by describing the SAIN,LIM system and its evolution from its early draft to the simplified nutrition labelling system (SENS) algorithm. Considered in 2010 by WHO as the 'French model' of nutrient profiling, SAIN,LIM classifies foods into four classes based on two scores: a nutrient density score (NDS) called SAIN and a score of nutrients to limit called LIM, and one threshold on each score. The system was first developed by the French Food Standard Agency in 2008 in response to the European regulation on nutrition and health claims (European Commission (EC) 1924/2006) to determine foods that may be eligible for bearing claims. Recently, the European regulation (EC 1169/2011) on the provision of food information to consumers allowed simplified nutrition labelling to facilitate consumer information and help them make fully informed choices. In that context, the SAIN,LIM was adapted to obtain the SENS algorithm, a system able to rank foods for simplified nutrition labelling. The implementation of the algorithm followed a step-by-step, systematic, transparent and logical process where shortcomings of the SAIN,LIM were addressed by integrating specificities of food categories in the SENS, reducing the number of nutrients, ordering the four classes and introducing European reference intakes. Through the French example, this review shows how an existing nutrient profiling system can be specifically adapted to support public health nutrition policies.
Assuntos
Dieta Saudável , Embalagem de Alimentos , Alimentos em Conserva/efeitos adversos , Indústria de Processamento de Alimentos , Promoção da Saúde/métodos , Adulto , Algoritmos , Pesquisa Biomédica/métodos , Pesquisa Biomédica/tendências , Criança , Fenômenos Fisiológicos da Nutrição Infantil , Congressos como Assunto , Dietética/métodos , Dietética/tendências , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/normas , Embalagem de Alimentos/tendências , Indústria de Processamento de Alimentos/legislação & jurisprudência , Indústria de Processamento de Alimentos/tendências , França , Promoção da Saúde/tendências , Humanos , Ciências da Nutrição/métodos , Ciências da Nutrição/tendências , Valor Nutritivo , Sociedades CientíficasRESUMO
The suitability of an acrylic adhesive used on food packaging was studied. Six potential migrants were identified using GC-MS and UPLC-QTOF. Five compounds were intentionally added (2-butoxyethanol and 2,4,7,9-tetramethyl-5-decyne-4,7-diol 10 (TMDD) and TMDD ethoxylates). One of the compounds identified as 2-(12-(methacryloyloxy) dodecyl)malonic acid was a non -intentionally added substance (NIAS), which could be a methyl metacrylate derivative. A migration study from multilayers containing paper-adhesive-film was carried out. The films used were polyethylene (PE), polypropylene, polyethylene terephthalate, polylactic acid (PLA) and Ecovio F2223®, which is a mixture of biodegradable polyester with PLA. All the non-volatile compounds, including the identified NIAS, migrated into the dry food simulant Tenax ®. Five surfactants based on TMDD were found to migrate from all laminates into Tenax at levels from 0.05 to 0.6 mg kg-1. The results showed that the lowest migration (0.01 mg kg-1 for 2-(12-(methacryloyloxy)dodecyl)malonic acid to 0.07 for TMDD mg kg-1) occurred when the compounds passed through PLA, demonstrating its functional barrier properties to these compounds. In contrast, PE showed the worst barrier properties to these compounds. To evaluate the migration results, the threshold of toxicological concern strategy was applied. The migration values of the surfactant identified were above 0.09 mg kg-1. Thus, it was decided to remove this surfactant from the formulation.
Assuntos
Adesivos/química , Contaminação de Alimentos/análise , Embalagem de Alimentos , Adesivos/análise , Adesivos/toxicidade , Difusão , Álcoois Graxos , Análise de Alimentos/métodos , Contaminação de Alimentos/prevenção & controle , Embalagem de Alimentos/instrumentação , Embalagem de Alimentos/métodos , Embalagem de Alimentos/normasRESUMO
Health claims potentially represent an opportunity for firms to engage in product differentiation and thereby induce investment into R&D and innovation in the food sector. The Nutrition and Health Claims Regulation (EC) No. 1924/2006 (NHCR) aims at protecting and promoting innovation as one of its objectives. However, existing studies indicate that this regulation may create several challenges for innovation in the food sector. To this end, we review the challenges related to the NHCR (Article 13.1) and its impact on innovation. Extant literature suggests that companies face challenges related to changing list of ingredients, missing transparency, wording of claims, limited financial resources, limited R&D resources, switching product categories and abandoning the functional foods sector. Moreover, current studies imply that so far the NHCR (in specific Article 13.1) does not seem to encourage innovation in the EU food sector.
Assuntos
Suplementos Nutricionais , Embalagem de Alimentos , Alimento Funcional , Legislação sobre Alimentos , Política Nutricional , Pesquisa Biomédica/economia , Pesquisa Biomédica/tendências , Suplementos Nutricionais/efeitos adversos , Suplementos Nutricionais/economia , Suplementos Nutricionais/normas , Difusão de Inovações , União Europeia , Aditivos Alimentares/efeitos adversos , Aditivos Alimentares/economia , Aditivos Alimentares/normas , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/normas , Indústria de Processamento de Alimentos/economia , Indústria de Processamento de Alimentos/legislação & jurisprudência , Alimento Funcional/efeitos adversos , Alimento Funcional/economia , Alimento Funcional/normas , Humanos , Legislação sobre Alimentos/tendências , Política Nutricional/legislação & jurisprudência , Política Nutricional/tendênciasRESUMO
Literature suggests that despite its positive aim of promoting innovation, the Nutrition and Health Claims Regulation (EC) No. 1924/2006 (NHCR) may bring along several compliance challenges, which might affect innovation in the EU food sector. This study investigates the challenges faced by companies to comply with the NHCR (specifically Article 13.1) and their impact on innovation. To this end, we conducted an online survey with 105 companies involved in the EU food sector. Results indicate that companies perceive wording of claims, missing transparency and limited financial resources as major challenges to comply with the NHCR (Article 13.1). Companies reported not to have increased their R&D expenditure or innovation activities after the NHCR (Article 13.1) was implemented. Thus, this study highlights specific compliance challenges related to the NHCR (Article 13.1) and indicates that currently, the regulation does not seem to have fostered innovation in the EU food sector.
Assuntos
Suplementos Nutricionais , Embalagem de Alimentos , Alimento Funcional , Fidelidade a Diretrizes , Legislação sobre Alimentos , Política Nutricional , Pesquisa Biomédica/economia , Pesquisa Biomédica/tendências , Suplementos Nutricionais/efeitos adversos , Suplementos Nutricionais/economia , Suplementos Nutricionais/normas , Difusão de Inovações , União Europeia , Aditivos Alimentares/efeitos adversos , Aditivos Alimentares/economia , Aditivos Alimentares/normas , Embalagem de Alimentos/legislação & jurisprudência , Embalagem de Alimentos/normas , Indústria de Processamento de Alimentos/economia , Indústria de Processamento de Alimentos/legislação & jurisprudência , Alimento Funcional/efeitos adversos , Alimento Funcional/economia , Alimento Funcional/normas , Humanos , Legislação sobre Alimentos/tendências , Política Nutricional/legislação & jurisprudência , Política Nutricional/tendênciasRESUMO
Premixed flours for infant porridge are increasingly produced and sold in developing countries to complement continued breastfeeding. Such complementary food (CF) products have known efficacy against malnutrition in children from 6 to 24 months of age, but ingredient ratios and production processes may vary. This study provides the first systematic measurement of their actual nutrient composition. We purchased samples of 108 premixed CF products in 22 low- and middle-income countries, and commissioned blind laboratory measurement of each product's macronutrients and micronutrients. We compared measured contents to nutrient claims on their packaging and to CF standards from the Codex Alimentarius, the Super Cereal Plus product used in nutrition assistance programs, and the Lutter and Dewey (2003) recommendations, as well as our own modeled nutrient requirements for a healthy breastfed child. Actual densities are significantly different from nutrient claims for protein (p = .013) and fat (p = .000). Only 15% of samples met two of the three benchmarks for fat, 32% met the most stringent protein standard, while only 22% met them for iron, and 21% for zinc. The median healthy child consuming breast milk plus enough of these solid foods to meet energy needs would experience deficits of zinc at 6 months, iron at 6 and 9 months, and dietary fat from 12 months of age. In summary, premixed CF products can provide adequate nutrient density but usually do not, revealing the need and opportunity for independent monitoring and quality assurance to help grain millers making premixed foods maintain uniform ingredient ratios and production practices.
Assuntos
Embalagem de Alimentos/normas , Alimentos Infantis/análise , Alimentos Infantis/normas , Desenvolvimento Infantil , Países em Desenvolvimento , Dieta , Gorduras na Dieta/análise , Proteínas Alimentares/análise , Feminino , Assistência Alimentar , Humanos , Lactente , Ferro/administração & dosagem , Masculino , Micronutrientes/análise , Leite Humano/química , Necessidades Nutricionais , Estado Nutricional , Zinco/administração & dosagemRESUMO
Metagenomic, microbial, chemical and sensory analyses of Thunnus albacares from Martinique stored in ice (AIR - 0 °C), vacuum (VP - 4/8 °C) and modified atmosphere packaging (MAP - 4/8 °C) (70% CO2 - 30% O2) were carried out. The organoleptic rejection of AIR tuna was observed at day 13 when total bacterial counts equaled 10(6)-10(7) CFU g(-1). No extension of shelf-life was provided by VP and MAP. According to 16S rRNA gene sequence analyzed by Illumina MiSeq and PCR-TTGE, Rhodanobacter terrae was the main species of the freshly caught tuna. At the sensory rejection time, Brochothrix thermosphacta and Pseudomonas dominated the AIR products while B. thermosphacta alone or a mix of B. thermosphacta, Enterobacteriaceae and lactic acid bacteria (LAB) dominated the microbiota of MAP and VP products, respectively. The pH value remained stable in all trials, ranging from 5.77 to 5.97. Total volatile basic nitrogen (TVBN) and trimethylamine (TMA-N) concentrations were weak and not significantly different between batches. Lipid oxidation increased in the samples containing O2 (MAP > AIR). The initial concentration of histamine was high (75-78 mg kg(-1)) and stable up to 8 days but then significantly decreased in all trials to reach 25-30 mg kg(-1), probably due to the presence of histamine-decomposing bacteria.
Assuntos
Bactérias/isolamento & purificação , Embalagem de Alimentos/normas , Armazenamento de Alimentos/normas , Alimentos Marinhos/microbiologia , Atum/microbiologia , Animais , Bactérias/classificação , Bactérias/genética , Brochothrix/genética , Brochothrix/isolamento & purificação , Contagem de Colônia Microbiana , Qualidade de Produtos para o Consumidor , Microbiologia de Alimentos , Armazenamento de Alimentos/métodos , Genes de RNAr , Histamina/análise , Gelo , Metagenômica , Microbiota/genética , Microbiota/fisiologia , Nitrogênio/análise , Controle de Qualidade , RNA Ribossômico 16S/genética , Alimentos Marinhos/análise , Paladar , VácuoRESUMO
This study was conducted to do exposure assessment of the possible migration of antimony trioxide (Sb2O3) from Polyethylene terephthalate (PET) food contact materials (FCM). Consumption Factor (CF) and Food-type Distribution Factor (fT) were calculated from survey data with reference to the US FDA method. The most conservative migration conditions were obtained by testing Sb migration from PET FCM based on the Chinese national standard of GB/T 5009.101-2003[1]. Migration levels of Sb from PET FCM were tested and migration levels of Sb2O3 were obtained through molecular weight conversion between Sb and Sb2O3. Exposure assessment of Sb2O3 was undertaken. The Chinese Estimated Daily Intake (EDI) of Sb2O3 resulted from PET FCM was 90.7 ng p-1d-1.
Assuntos
Antimônio/análise , Exposição Ambiental , Contaminação de Alimentos/análise , Embalagem de Alimentos , Polietilenotereftalatos , China , Embalagem de Alimentos/normas , HumanosRESUMO
BACKGROUND: Earlier research has identified consumer characteristics associated with viewing Nutrition Facts labels; however, little is known about those who view front-of-package nutrition labels. Front-of-package nutrition labels might appeal to more consumers than do Nutrition Facts labels, but it might be necessary to provide consumers with information about how to locate and use these labels. OBJECTIVE: This study quantifies Nutrition Facts and front-of-package nutrition label viewing among American adult consumers. DESIGN: Attention to nutrition information was measured during a food-selection task. PARTICIPANTS/SETTING: One hundred and twenty-three parents (mean age=38 years, mean body mass index [calculated as kg/m(2)]=28) and one of their children (aged 6 to 9 years) selected six foods from a university laboratory-turned-grocery aisle. INTERVENTION: Participants were randomized to conditions in which front-of-package nutrition labels were present or absent, and signage explaining front-of-package nutrition labels was present or absent. MAIN OUTCOME MEASURES: Adults' visual attention to Nutrition Facts labels and front-of-package nutrition labels was objectively measured via eye-tracking glasses. STATISTICAL ANALYSES PERFORMED: To examine whether there were significant differences in the percentages of participants who viewed Nutrition Facts labels vs front-of-package nutrition labels, McNemar's tests were conducted across all participants, as well as within various sociodemographic categories. To determine whether hypothesized factors, such as health literacy and education, had stronger relationships with front-of-package nutrition label vs Nutrition Facts label viewing, linear regression assessed the magnitude of relationships between theoretically and empirically derived factors and each type of label viewing. RESULTS: Overall, front-of-package nutrition labels were more likely to be viewed than Nutrition Facts labels; however, for all subgroups, higher rates of front-of-package nutrition label viewership occurred only when signage was present drawing attention to the presence and meaning of front-of-package nutrition labels. CONCLUSIONS: Consumers should receive education about the availability and use of new nutrition labels.
Assuntos
Comportamento de Escolha , Informação de Saúde ao Consumidor/normas , Rotulagem de Alimentos/normas , Embalagem de Alimentos/normas , Preferências Alimentares , Adulto , Atenção , Criança , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Modelos Lineares , Masculino , Fatores Socioeconômicos , Inquéritos e QuestionáriosRESUMO
The aim of this study was to determine the non-intentionally added substances--formaldehyde and trace metals--at 4% acetic acid conditions in rubber and metallic packaging/utensils. The temperature effect on migration in rubber and metallic packaging/utensils was monitored at 60 °C and 100 °C under acidic (pH < 3) circumstances. The concentrations were: formaldehyde--23.1 µg kg⻹, lead--13.41 µg kg⻹, cadmium--0.15 µg kg⻹, total arsenic--2.02 µg kg⻹ and nickel--2.92 µg kg⻹ at 60 °C and formaldehyde--148.9 µg kg⻹, lead--17.04 µg kg⻹, cadmium--0.14 µg kg⻹, total arsenic--7.25 µg kg⻹ and nickel--8.7 µg kg⻹ at 100 °C. A significant difference was noticed in formaldehyde and total arsenic between both temperatures (p < 0.01), which was not present in other trace metals. In conclusion, formaldehyde and total arsenic were more sensitive with cooking temperature than the other metals.
Assuntos
Utensílios de Alimentação e Culinária , Contaminação de Alimentos/prevenção & controle , Embalagem de Alimentos , Formaldeído/análise , Metais Pesados/análise , Metais/química , Borracha/química , Arsênio/análise , Arsênio/química , Arsênio/toxicidade , Cádmio/análise , Cádmio/química , Cádmio/toxicidade , Utensílios de Alimentação e Culinária/economia , Utensílios de Alimentação e Culinária/normas , Embalagem de Alimentos/economia , Embalagem de Alimentos/normas , Formaldeído/química , Formaldeído/toxicidade , Guias como Assunto , Temperatura Alta/efeitos adversos , Humanos , Concentração de Íons de Hidrogênio , Chumbo/análise , Chumbo/química , Chumbo/toxicidade , Limite de Detecção , Teste de Materiais , Metais Pesados/química , Metais Pesados/toxicidade , Níquel/análise , Níquel/química , Níquel/toxicidade , Reprodutibilidade dos Testes , República da Coreia , SolubilidadeRESUMO
BACKGROUND: The aim of this research was to understand the migration of bisphenols from can coatings into foods in the Chinese market. RESULTS: The migration of bisphenols was studied in commercial cans from the Chinese market filled with four types of food simulant (FS), which were heated at 121 °C for 30 min and stored at 40 °C for 30 days. Only bisphenol A (BPA) and bisphenol A diglycidyl ether (BADGE) were found in the can coatings, and SimC (10% (v/v) ethanol/water) was the most suitable FS for their release. The levels of these bisphenols in 24 kinds of canned beer from Chinese markets were also investigated. The average concentrations of BPA and BADGE were 2.85 ± 0.79 and 0.38 ± 0.19 µg · L⻹ respectively, which were both lower than the EU limits, and their respective daily intakes were estimated at 0.015 and 0.0020 µg · kg⻹ body weight · day⻹. Besides, increasing storage temperature and time accelerated the release of bisphenols into FSs. CONCLUSION: The present results provide some guidance to reduce the migration of bisphenols during the transport and storage of canned foods.
Assuntos
Cerveja/análise , Compostos Benzidrílicos/análise , Carcinógenos/análise , Contaminação de Alimentos , Embalagem de Alimentos , Alimentos em Conserva/análise , Modelos Químicos , Fenóis/análise , Métodos Analíticos de Preparação de Amostras , Cerveja/economia , Compostos Benzidrílicos/química , Carcinógenos/química , China , Cromatografia Líquida de Alta Pressão , Compostos de Epóxi/análise , Compostos de Epóxi/química , Contaminação de Alimentos/prevenção & controle , Embalagem de Alimentos/normas , Armazenamento de Alimentos , Alimentos em Conserva/economia , Temperatura Alta/efeitos adversos , Limite de Detecção , Fenóis/química , Extração em Fase Sólida , Solubilidade , Espectrometria de Fluorescência , Espectroscopia de Infravermelho com Transformada de Fourier , Propriedades de SuperfícieRESUMO
Aseptic-Ultra-High-Temperature (UHT) products are manufactured to be free of microorganisms capable of growing in the food at normal non-refrigerated conditions at which the food is likely to be held during manufacture, distribution and storage. Two important phases within the process are widely recognised as critical in controlling microbial contamination: the sterilisation steps and the following aseptic steps. Of the microbial hazards, the pathogen spore formers Clostridium botulinum and Bacillus cereus are deemed the most pertinent to be controlled. In addition, due to a relatively high thermal resistance, Geobacillus stearothermophilus spores are considered a concern for spoilage of low acid aseptic-UHT products. A probabilistic exposure assessment model has been developed in order to assess the aseptic-UHT product failure rate associated with these three bacteria. It was a Modular Process Risk Model, based on nine modules. They described: i) the microbial contamination introduced by the raw materials, either from the product (i.e. milk, cocoa and dextrose powders and water) or the packaging (i.e. bottle and sealing component), ii) the sterilisation processes, of either the product or the packaging material, iii) the possible recontamination during subsequent processing of both product and packaging. The Sterility Failure Rate (SFR) was defined as the sum of bottles contaminated for each batch, divided by the total number of bottles produced per process line run (10(6) batches simulated per process line). The SFR associated with the three bacteria was estimated at the last step of the process (i.e. after Module 9) but also after each module, allowing for the identification of modules, and responsible contamination pathways, with higher or lower intermediate SFR. The model contained 42 controlled settings associated with factory environment, process line or product formulation, and more than 55 probabilistic inputs corresponding to inputs with variability conditional to a mean uncertainty. It was developed in @Risk and run through Monte Carlo simulations. Overall, the highest SFR was associated with G. stearothermophilus (380000 bottles contaminated in 10(11) bottles produced) and the lowest to C. botulinum (3 bottles contaminated in 10(11) bottles produced). Unsurprisingly, SFR due to G. stearothermophilus was due to its ability to survive the UHT treatment. More interestingly, it was identified that SFR due to B. cereus (17000 bottles contaminated in 10(11) bottles produced) was due to an airborne recontamination of the aseptic tank (49%) and a post-sterilisation packaging contamination (33%). A deeper analysis (sensitivity and scenario analyses) was done to investigate how the SFR due to B. cereus could be reduced by changing the process settings related to potential air recontamination source.
Assuntos
Fenômenos Fisiológicos Bacterianos , Microbiologia de Alimentos , Embalagem de Alimentos/normas , Modelos Teóricos , Animais , Bacillus cereus/fisiologia , Clostridium botulinum/fisiologia , Geobacillus stearothermophilus/fisiologia , Leite/microbiologia , Esterilização/normasRESUMO
Adhesives are used to manufacture multilayer materials, where their components pass through the layers and migrate to the food. Nine different adhesives (acrylic, vinyl and hotmelt) and their migration in 21 laminates for future use as market samples have been evaluated and risk assessment has been carried out. A total of 75 volatiles and non volatile compounds were identified by gas chromatography-mass spectrometry and ultra-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry. Most of the compounds migrated below their specific migration limit (SML), lowest observed adverse effect level (LOAEL), no observed adverse effect level (NOAEL) and values recommended by Cramer. Six compounds classified as high toxicity class III according to Cramer classification, migrated over their SML and exposure values recommended by Cramer, when they were applied in the full area of the packaging. Nevertheless, these adhesives fulfill the threshold in the real application as they are applied in a small area of the packaging.
Assuntos
Adesivos/química , Contaminação de Alimentos/análise , Embalagem de Alimentos/normas , Análise de Alimentos/métodos , Cromatografia Gasosa-Espectrometria de Massas , Nível de Efeito Adverso não Observado , Medição de Risco , Sensibilidade e Especificidade , Compostos Orgânicos Voláteis/análiseRESUMO
Bacteriocins from lactic acid bacteria have potential as natural food preservatives. In this study two active (synthetic and gluten) films were obtained by the incorporation of lactocin 705 and lactocin AL705, bacteriocins produced by Lactobacillus curvatus CRL705 with antimicrobial activity against spoilage lactic acid bacteria and Listeria. Antimicrobial film effectiveness was determined in Wieners inoculated with Lactobacillus plantarum CRL691 and Listeria innocua 7 (10(4)CFU/g) stored at 5°C during 45days. Active and control (absence of bacteriocins) packages were prepared and bacterial counts in selective media were carried out. Visual inspection and pH measurement of Wieners were also performed. Typical growth of both inoculated microorganisms was observed in control packages which reached 10(6)-10(7)CFU/g at the end of storage period. In the active packages, L. innocua 7 was effectively inhibited (2.5 log cycles reduction at day 45), while L. plantarum CRL691 was only slightly inhibited (0.5 log cycles) up to the second week of storage, then counts around 10(6)-10(7)CFU/g were reached. Changes in pH values from 6.3 to 5.8 were produced and gas formation was observed in active and control packages. The low inhibitory effectiveness against lactic acid bacteria is in correlation with the low activity observed for lactocin 705 in the presence of fat; Wieners fat content (20-30%) may adversely affect antimicrobial activity. This study supports the feasibility of using polymers activated with L. curvatus CRL705 bacteriocins to control Listeria on the surface of Wieners and highlights the importance of evaluating antimicrobial packaging systems for each particular food application.
Assuntos
Conservação de Alimentos/métodos , Conservantes de Alimentos/farmacologia , Lactobacillus plantarum/efeitos dos fármacos , Lactobacillus/química , Listeria/efeitos dos fármacos , Produtos da Carne/microbiologia , Polímeros/farmacologia , Anti-Infecciosos/metabolismo , Anti-Infecciosos/farmacologia , Carga Bacteriana , Bacteriocinas/farmacologia , Gorduras na Dieta/análise , Gorduras na Dieta/metabolismo , Embalagem de Alimentos/normas , Conservantes de Alimentos/metabolismo , Concentração de Íons de Hidrogênio , Lactobacillus plantarum/crescimento & desenvolvimento , Listeria/crescimento & desenvolvimento , Polímeros/químicaRESUMO
Global warming represents one of the most critical internationally perceived environmental issues. The growing, and increasingly global, wine sector is one of the industries which is under increasing pressure to adopt approaches for environmental assessment and reporting of product-related greenhouse gas emissions. The International Organization for Vine and Wine has recently recognized the need to develop a standard and objective methodology and a related tool for calculating carbon footprint (CF). This study applied this tool to a wine previously analyzed using the life cycle assessment (LCA) methodology. The objective was to test the tool as regards both its potential and possible limitations, and thus to assess its suitability as a standard tool. Despite the tool's user-friendliness, a number of limitations were noted including the lack of accurate baseline data, a partial system boundary and the impossibility of dealing with the multi-functionality issue. When the CF and LCA results are compared in absolute terms, large discrepancies become obvious due to a number of different assumptions, as well as the modeling framework adopted. Nonetheless, in relative terms the results seem to be quite consistent. However, a critical limitation of the CF methodology was its focus on a single issue, which can lead to burden shifting. In conclusion, the study confirmed the need for both further improvement and adaptation to additional contexts and further studies to validate the use of this tool in different companies.