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1.
Molecules ; 29(10)2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38792111

RESUMO

The study evaluated the effect of adding dandelion extract on the characteristics of raw-ripening pork sausages while reducing the nitrite addition from 150 to 80 mg/kg. The sausages were made primarily from pork ham (80%) and pork jowl (20%). The process involved curing, preparing the meat stuffing, forming the links, and then subjecting the sausages to a 21-day ripening period. Physicochemical parameters such as pH, water activity, and oxidation-reduction potential were compared at the beginning of production and after the ripening process. The study also examined the impact of ripening on protein metabolism in pork sausages and compared the protein profiles of different sausage variants. The obtained research results indicate that dandelion-leaf extract (Taraxacum officinale) were rich in phenolic acids, flavonoids, coumarins, and their derivatives (LC-QTOF-MS method). Antiradical activity test against the ABTS+* and DPPH radical, and the TBARS index, demonstrated that addition of dandelion (0.5-1%) significantly improved the oxidative stability of raw-ripening sausages with nitrite content reduction to 80 mg/kg. A microbiological evaluation of the sausages was also carried out to assess the correctness of the ripening process. The total number of viable bacteria, lactic acid bacteria, and coliforms were evaluated and subsequently identified by mass spectrometry.


Assuntos
Produtos da Carne , Extratos Vegetais , Taraxacum , Taraxacum/química , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Produtos da Carne/microbiologia , Produtos da Carne/análise , Animais , Suínos , Antioxidantes/farmacologia , Antioxidantes/química , Oxirredução , Nitritos/química , Nitritos/análise
2.
Molecules ; 28(24)2023 Dec 08.
Artigo em Inglês | MEDLINE | ID: mdl-38138499

RESUMO

The aim of this study was to assess the antioxidant and inhibiting (ACE-I, DPP IV, and alpha-glucosidase) potential of canned meat featuring reduced sodium nitrate content (50 mg/kg) and fortified with freeze-dried currant leaf extract. Research indicates that employing a lyophilizate dose of 150 mg/kg yields optimal benefits in terms of the antioxidant activity of the meat product. Additionally, three highly promising sequences for canned meat were identified via analysis in the BIOPEP database. These sequences are RPPPPPPPPAD, exhibiting DPP-IV inhibiting activity; ARPPPGPPPLGPPPPGP, demonstrating ACE-I inhibiting activity; and PPGPPPPP, displaying alpha-glucosidase inhibiting activity. Using bioinformatics tools, molecular docking was performed by pairing the selected peptides with protein receptors 2QT9, 1O86, and 5NN8, respectively (PDB ID). The examination of the potential of these selected sequences to manifest specific biological activities toward enzymes was based on the free energy value (∆Gbinding). This knowledge can be harnessed for designing functional foods, thereby contributing to the safeguarding of consumer health.


Assuntos
Carne de Porco , Carne Vermelha , Ribes , Animais , Suínos , Simulação de Acoplamento Molecular , Carne de Porco/análise , Carne Vermelha/análise , alfa-Glucosidases , Carne/análise , Extratos Vegetais/farmacologia
3.
Molecules ; 28(4)2023 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-36838736

RESUMO

Sodium nitrite is a multifunctional additive commonly used in the meat industry. However, this compound has carcinogenic potential, and its use should be limited. Therefore, in this study the possibility of reducing the amount of sodium(III) nitrite added to canned meat from 100 to 50 mg/kg, while enriching it with freeze-dried blackcurrant leaf extract, was analyzed. The possibility of fortification of canned meat with blackcurrant leaf extract was confirmed. It contained significant amounts of phenolic acids and flavonoid derivatives. These compounds contributed to their antioxidant activity and their ability to inhibit the growth of selected Gram-positive bacteria. In addition, it was observed that among the three different tested doses (50, 100, and 150 mg/kg) of the blackcurrant leaf extract, the addition of the highest dose allowed the preservation of the antioxidant properties of canned meat during 180 days of storage (4 °C). At the end of the storage period, this variant was characterized by antiradical activity against ABTS (at the level of 4.04 mgTrolox/mL) and the highest reducing capacity. The addition of 150 mg/kg of blackcurrant leaf extract caused a reduction in oxidative transformations of fat in meat products during the entire storage period, reaching a level of TBARS almost two times less than in the control sample. In addition, these products were generally characterized by stability (or slight fluctuations) of color parameters and good microbiological quality and did not contain N-nitrosamines.


Assuntos
Carne de Porco , Carne Vermelha , Ribes , Animais , Suínos , Nitritos , Extratos Vegetais/farmacologia , Antioxidantes/farmacologia
4.
Molecules ; 27(20)2022 Oct 16.
Artigo em Inglês | MEDLINE | ID: mdl-36296529

RESUMO

The aim of the study was to demonstrate canned pork as a functional meat product due to the presence of potentially anti-cancer factors, e.g., (a) bioactive peptides with potential activity against cancer cells; (b) lowering the content of sodium nitrite and with willow herb extract. In silico (for assessing the anticancer potential of peptides) and in vitro (antiproliferation activity on L-929 and CT-26 cell lines) analysis were performed, and the obtained results confirmed the bioactive potential against cancer of the prepared meat product. After 24 h of incubation with peptides obtained from meat product containing lyophilized herb extract at a concentration of 150 mg/kg, the viability of both tested cell lines was slightly decreased to about 80% and after 72 h to about 40%. On the other hand, after 72 h of incubation with the peptides obtained from the variant containing 1000 mg/kg of freeze-dried willow herb extract, the viability of intestinal cancer cells was decreased to about 40%, while, by comparison, the viability of normal cells was decreased to only about 70%.


Assuntos
Produtos da Carne , Salix , Nitrito de Sódio , Peptídeos/farmacologia , Extratos Vegetais/farmacologia , Carne
5.
Food Funct ; 13(6): 3526-3539, 2022 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-35253026

RESUMO

The present study aimed to evaluate the effect of the addition of various amounts (50, 100, 150 and 1000 mg kg-1) of E. angustifolium L. extracts on the biological activity of peptides in canned meat with reduced amount of sodium nitrite and their stability during 180 days of storage (4 °C). The initial peptide data were collected by LC/MS. Antioxidant activities of peptide extracts were detected on the basis of ABTS˙*, FRAP, and iron(II) chelating activity in in vitro tests. A computational study (based on the BIOPEP-UWM database and INNOVAGEN, PeptideRanker and PROTPARAM tools) was also performed to assist in the interpretation of results. The addition of E. angustifolium L. extracts has a positive effect on the peptide profile and various biological activities, the results of which depend on the amount of the extract added to the meat product. However, it should be remembered that the differences between in silico and in vitro experimental environments necessitate further research to confirm the antioxidant behavior of canned meat products supplemented with E. angustifolium L. extract under physiological conditions. Other interactions between the peptide and the food matrix should also be considered as these can lead to chemical and structural modifications that can affect the bioavailability of the bioactive peptides.


Assuntos
Epilobium , Salix , Antioxidantes/química , Antioxidantes/farmacologia , Epilobium/química , Carne , Nitritos , Peptídeos/farmacologia , Extratos Vegetais/química , Extratos Vegetais/farmacologia
6.
Meat Sci ; 184: 108623, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34753110

RESUMO

Meat products constitute one of the most important groups of traditional foods. Thanks to the unique and favorable organoleptic characteristics, and high quality, they are willingly chosen by consumers. Lately, there has been a growing concern over the health aspects of these products. Therefore, the aim of this study was to analyze the nutritional value and factors affecting quality and health safety of traditional meat products on the basis of available literature. The study findings have revealed various issues with uniformity of traditional meat products. Products of the same name may differ substantially considering nutritional value. Reports also indicate that there are some discrepancies which can be attributed to product character (traditional/conventional). They mainly concern the content of moisture, protein, salt, fat, and fatty acid profile. Research suggests that traditional meat products may also be associated with some health safety issues, such as the presence of pathogens, polycyclic aromatic hydrocarbons, nitrate and nitrite residues, N-nitrosamines, biogenic amines and heavy metals.


Assuntos
Inocuidade dos Alimentos , Produtos da Carne/normas , Valor Nutritivo , Animais , Europa (Continente) , Contaminação de Alimentos/análise , Produtos da Carne/análise , Produtos da Carne/microbiologia
7.
Foods ; 9(12)2020 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-33333851

RESUMO

The purpose of this study was to determine the possibility of reducing the amount of NaNO2 added to canned pork during 180 days of storage. In this study, three variants of canned pork were prepared by adding different amounts of sodium nitrite: N (100 mg/kg), NH (50 mg/kg), and NF (no nitrite). The antioxidant capacity, amount of secondary products of lipid oxidation, color intensity, and pH were analyzed after one, 60, 90, and 180 days of storage where sensory properties, water activity (aw), selected pathogenic bacteria, nitrate and nitrite residues, N-nitrosamines (NA), and cholesterol were analyzed after 1 and 180 days of storage. The redness parameter of the nitrite-free canned meat was found to be significantly lower (about 6.4) than that of the products containing sodium nitrite (N: 10.49 and NH: 9.89). During the storage period C. perfringens, L. monocytogenes, and Salmonella were detected in the products. It is not possible to completely eliminate nitrite from the canned pork production process without deteriorating the color, antioxidant properties, sensory characteristics, and health safety. However, the level of hazard chemicals such as NA, nitrate and nitrite residues can be limited by decreasing the amount of nitrite addition to 50 mg/kg. The free-radical scavenging ability for the sample with 50 mg/kg of sodium nitrite was observed to be poor, so its fortification with plant material rich in various polyphenolic substances may be necessary.

8.
Molecules ; 25(20)2020 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-33066429

RESUMO

The present study assessed the effect of pretreating beef as a raw material for sous vide steak preparation. The pretreatment involved maceration of a batch of meat in sour milk with the simultaneous use of ultrasound (250 or 500 W) as well as the addition of Taraxacum officinale. The biological activity profile of the peptides was assessed in terms of their antioxidant activity and inhibiting activity against angiotensin-converting enzyme (ACE). Changes in the biological activity of peptides under the influence of hydrolysis by gastrointestinal enzymes, i.e., pepsin and pancreatin, were also considered. There was no significant effect of T. officinale addition and sonication of beef batches on the protein content (except for lot S6, after sonication at 500 W as acoustic power and with the addition of dandelion). It was observed that the interaction of maceration in sour milk with simultaneous ultrasound treatment as the initial production step of sous vide beef steak generates the formation of peptides with antioxidant properties. Moreover, peptide formation can be further enhanced by adding dandelion (based on the results of antiradical and chelating activity tests). In addition, the progression of hydrolysis under the influence of gastrointestinal enzymes promotes the release of peptides with antioxidant and anti-ACE activity.


Assuntos
Inibidores da Enzima Conversora de Angiotensina/farmacologia , Proteínas Animais da Dieta/farmacologia , Antioxidantes/farmacologia , Leite , Carne Vermelha , Inibidores da Enzima Conversora de Angiotensina/química , Proteínas Animais da Dieta/química , Animais , Antioxidantes/química , Fermentação , Hidrólise , Pancreatina/química , Pepsina A/química , Sonicação , Taraxacum/química
9.
Antioxidants (Basel) ; 9(9)2020 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-32906682

RESUMO

The growing consumer interest in organic foods, as well as, in many cases, the inconclusiveness of the research comparing organic and conventional foods, indicates a need to study this issue further. The aim of the study was to compare the effects of meat origin (conventional vs. organic) and selected elements of the pork carcass (ham, loin, and shoulder) on the meat proteome and the antioxidant potential of its peptides. The peptidomic approach was used, while the ability of antioxidants to scavenge 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulfonic acid (ABTS), to chelate Fe(II) ions, and to reduce Fe(III) was determined. Most peptides were derived from myofibrillary proteins. The meat origin and the element of the pork carcass did not have a significant effect on the proteome. On the other hand, the pork origin and the carcass element significantly affected the iron ion-chelating capacity (Fe(II)) and the reducing power of peptides. In particular, pork ham from conventional rearing systems had the best antioxidant properties in relation to potential antioxidant peptides. This could be a factor for human health, as well as for stabilized meat products (e.g., toward lipid oxidation).

10.
Antioxidants (Basel) ; 9(8)2020 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-32764511

RESUMO

Nitrite is the most commonly applied curing agent in the meat industry, and is known to affect human health. Nitrites impart a better flavor, taste and aroma; preserve the red-pinkish color of the meat; and prevent the risk of bacterial contamination of the cured meat, especially from Clostridium botulinum. Unfortunately, recent research has demonstrated some negative effects of this technique. Certain N-nitroso compounds have been shown to stimulate gastric cancer; therefore, most of the research groups are studying the effects of nitrates and nitrites. In this review, we discuss the various food sources of nitrites and nitrates and their current legal requirements for use in meat products. We also discuss the possible changes that might come up in the regulations, the concerns associated with nitrates and nitrites in meat products, and the use of plant-based nitrite and nitrate substitutes. All these topics will be considered with respect to ensuring a high level of microbiological protection, oxidative stability and acceptable sensory quality (color, taste and smell) in meat products.

11.
Foods ; 9(1)2020 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-31963811

RESUMO

Grape seeds have been evaluated for use as food ingredients with stabilizing effects in meat technology. A pork neck, inoculated with probiotic monoculture (Lactobacillus rhamnosus LOCK900), was used as the matrix. The study compared the antioxidant potential of grape seed extract to sodium ascorbate. Three experimental variants of the products were prepared: With grape seed extract, with sodium ascorbate, and without additives. The meat ripened for two months, and during this period of time biophysicochemical analyses (product color, pH, number of lactic acid bacteria, content of free fatty acids, and thiobarbituric acid reactive substances) were carried out. It was found that the extract inhibited lipid hydrolysis occurring in the neck (1% of oleic acid) and limited oxidative processes (0.46 mg MDA kg-1), with efficacy similar to that of sodium ascorbate (0.9% of oleic acid and 0.53 mg MDA kg-1, respectively). No limitation of the desired lactic acid bacteria growth (approximately 7 log cfu g-1) was noticed in the meat samples with the extract. The results are optimistic because they indicate that not only is it possible to produce fermented pork neck inoculated with probiotic, but there are also no obstacles to utilizing grape seed extract as a natural antioxidant in this technology.

12.
Antioxidants (Basel) ; 9(1)2019 Dec 21.
Artigo em Inglês | MEDLINE | ID: mdl-31877777

RESUMO

Oxidation processes are responsible for reduction of the sensory and nutritional quality of meat and meat products, thus affecting consumer acceptance. The use of sodium nitrite in meat processing is an important factor limiting these changes. Therefore, eliminating this substance from the recipe of meat products to increase their nutritional value is not an easy challenge. The aim of this study was to determine the effect of sodium nitrite reduction on the lipid oxidation (peroxide value, thiobarbituric acid reactive substances), and color parameters (CIE L*a*b*, total heme pigment and heme iron, nitrosylmyoglobin) in cooked meat products during 15 days of vacuum storage. The antioxidant properties of products and isolated peptides (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS•), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, ferric-reducing antioxidant power) were also evaluated. Experimental material included four different sample groups of cooked meat products produced with various percentages of sodium nitrite (0, 50, 100, and 150 mg kg-1). It was shown that the sodium nitrite dose had no statistically significant effect on lightness (L*) and redness (a*) values, as well as nitrosylmyoglobin content. Along with decreasing the share of sodium nitrite in the samples, the thiobarbituric acid reactive substances (TBARS) value increased from 0.43 mg kg-1 for samples with 150 mg kg-1 at day 0 to 3.14 mg kg-1 for samples without nitrite at day 15. The total ABTS scavenging capacity of the cooked meat samples was in the range 2.48 to 4.31 eqv. mM Trolox per g of product throughout the entire storage period. During storage, the ferric-reducing antioxidant power of samples with nitrite increased from 0.25 to 0.38 eqv. mg/mL ascorbic acid per g of product. In conclusion, reduction of nitrite to the level of 50 mg kg-1 seemed to be comparable with the traditional use of nitrite in meat products in terms of the physicochemical properties and properties related to lipid oxidation, as well as total antioxidant capacity and peptide antioxidant capacity.

13.
Biomolecules ; 9(10)2019 10 16.
Artigo em Inglês | MEDLINE | ID: mdl-31623123

RESUMO

In this study, we evaluated the effect of marination time on changes in the antioxidant properties of peptides extracted from bovine semimembranosus muscle. We measured antiradical scavenging capacity and reducing power of the peptides using a spectrophotometric decolorization method; inhibition of lipid oxidation was also assessed by estimating the level of malondialdehyde formed. According to our results, there was no benefit from the doubling of marinating time (from 24 to 48 h) as part of the preprocessing of beef. Samples from S1 batch (24 h marination) showed better antioxidant properties than those from S2 batch. We also tested various color parameters as a reflection of the inhibition of oxidative processes, in which case, the most favorable parameters from the consumer point of view were found to be lightness and redness. The effect of marination time on the degree of proteolytic changes was estimated using peptidomic approach. The degradation of myoglobin, hemoglobin, creatine kinase-type M, and beta-enolase-as the most sensitive proteins to proteolytic degradation-was observed during the 62 days of processing. It seems that the prolongation of marination time as a preprocessing step intensifies the hydrolytic degradation of proteins and peptides during the processing step. This results in the loss (or it has no effect) of antioxidative properties in organic dry-fermented beef.


Assuntos
Antioxidantes/isolamento & purificação , Fermentação , Peptídeos/isolamento & purificação , Animais , Antioxidantes/química , Antioxidantes/metabolismo , Bovinos , Músculo Esquelético/química , Músculo Esquelético/metabolismo , Peptídeos/química , Peptídeos/metabolismo , Carne Vermelha , Fatores de Tempo
14.
Meat Sci ; 148: 113-119, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30388475

RESUMO

Organic beef was dry fermented in sea salt (C) or acid whey (W). In order to test the effect of ultrasound, the W sample was subjected to sonication (U10) in an ultrasonic bath (10 min, 40 kHz, 480 W). The effect of sonication on fatty acid (FA) composition (%) and atherogenicity, thrombogenicity, hypocholesterolemic/hypercholesterolemic, peroxidistability indexes (AI, TI, h/H, and PI, respectively), thiobarbituric acid reactive substances (TBARS) value, and color parameters were investigated during ripening period (31, 62, and 93 days). The 10 min sonication did not have influence on AI, TI, and h/H indexes compared with C sample. However, we observed healthy improvements of AI (P < 0.05), TI (P < 0.01), h/H (P < 0.001), and PI (P < 0.001) indexes in W sample. Nevertheless, U10 fermented beef showed the lowest redness parameter in 93 day of ripening. The processes of lipid oxidation were found to be accelerated by the US treatment, however only after 31 days of ripening.


Assuntos
Valor Nutritivo , Carne Vermelha/análise , Sonicação/métodos , Animais , Bovinos , Cor , Gorduras na Dieta/análise , Ácidos Graxos/análise , Fermentação , Manipulação de Alimentos , Conservação de Alimentos , Alimentos Orgânicos/análise , Oxirredução , Cloreto de Sódio na Dieta , Substâncias Reativas com Ácido Tiobarbitúrico/análise , Soro do Leite/química
15.
J Sci Food Agric ; 98(10): 3728-3734, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29315594

RESUMO

BACKGROUND: The effect of marinating beef in acid whey on the antioxidant peptides generated, and their influence on lipid oxidation, colour stability, sensory analysis and protein degradation products in uncured roasted beef stored 6 weeks in vacuum conditions (T = 4 °C) were determined. Measurements of pHe, water activity, oxidation-reduction potential, colour, TBARS, the cutting force, texture and amino acid profile, the total content of peptides, and antioxidant activity of isolated peptides were conducted immediately after production and during 42 days of storage. RESULTS: The non-nitrite control batch (C) was characterized by a lower a* value (6.33-6.70) during the whole storage period compared to the non-nitrite sample with acid whey (W). It also appears that meat with the worst colour stability has the poorest oxidative stability (C = 1.57 mg MDA kg-1 , W = 0.76 mg MDA kg-1 ). Activity against reactive forms of oxygen to fraction A and fraction B (P < 0.05) showed an increasing trend with time and it was the largest in sample C and W. CONCLUSION: The results indicated that bioactive peptides could be generated in uncured roasted beef. The <3.5 kDa peptides have strong antioxidant activity, as a result of which they function as inhibitors of lipid oxidation and colour discoloration during prolonged storage. © 2018 Society of Chemical Industry.


Assuntos
Antioxidantes/química , Carne/análise , Peptídeos/química , Soro do Leite/química , Animais , Bovinos , Cor , Manipulação de Alimentos , Concentração de Íons de Hidrogênio , Lipídeos/química , Oxirredução , Proteínas do Soro do Leite/química
16.
Endocrine ; 56(2): 240-244, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28293857

RESUMO

PURPOSE: Cilostazol (Pletal), a phosphodiesterase-3 inhibitor, was approved in the United States in 1999 to reduce symptoms of intermittent claudication. Cyclic adenosine monophosphate levels increase from inhibition of phosphodiesterase resulting in anti-platelet, anti-inflammatory, and vasodilatory effects. Diabetes mellitus is a chronic disease that causes endothelial and platelet dysfunction leading to both microvascular and macrovascular complications. This mini-review highlights the emerging evidence suggesting benefits of using cilostazol in treating microvascular complications associated with diabetes mellitus. METHODS: A review of literature was conducted using PubMed and Embase databases focusing on cilostazol use in diabetes mellitus. RESULTS: Cilostazol demonstrated renoprotective effects in patients with diabetic nephropathy by reducing serum soluble adhesion molecule-1 and monocyte chemoattractant protein-1. Cilostazol's anti-inflammatory actions predictably attenuate glomerular damage from increased leukocyte adherence. Additionally, cilostazol delayed renal dysfunction secondary to type 2 diabetes mellitus as albuminuria was reduced most likely resulting from inhibition of nuclear factor kappa-induced inflammatory and endothelial markers. Cilostazol's anti-inflammatory actions in addition to its vasodilatory actions relieved retinal hypoxia and decreased excessive production of retinal blood vessels suggesting benefit in diabetic retinopathy. Cilostazol did not improve neuropathy symptom scores signifying that it may not be as beneficial in patients with diabetic peripheral neuropathy without diabetic nephropathy or diabetic retinopathy. CONCLUSIONS: Cilostazol's pleiotropic effects may be beneficial in patients with type 2 diabetes mellitus and diabetic nephropathy. Additional, larger studies need to be conducted to assess the benefits and risks of using cilostazol as an alternative agent in treating patients with diabetic microvascular complications.


Assuntos
Angiopatias Diabéticas/tratamento farmacológico , Nefropatias Diabéticas/tratamento farmacológico , Neuropatias Diabéticas/tratamento farmacológico , Tetrazóis/uso terapêutico , Vasodilatadores/uso terapêutico , Cilostazol , Humanos , Resultado do Tratamento
17.
Acta Sci Pol Technol Aliment ; 15(2): 191-200, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-28071009

RESUMO

BACKGROUND: In recent years, interest in uncured meat products has grown and studies were carried out on the use of substances which could replace nitrites, such as acid whey. In spite of this problem in fermented meat products, there is no information regarding the effects of prolonged ageing on the formation of chemical (nitrosoamines, biogenic amines, secondary lipid oxidation products) and microbiological (L. monocytogenes, S. aureus, OLD) toxicants in fermented beef marinated with acid whey. The aim of this study was to determine the selected pathogenic bacteria, biogenic amines, N-nitrosamines contents in fermented beef subjected to extended ageing. METHODS: In this study, selected pathogenic bacteria, N-nitrosamines, biogenic amines, amino acids, TBARS values changes during the ageing of fermented beef marinated with acid whey were analyzed in 0-, 2- and 36-month-old samples. RESULTS: The pH values of fermented beef aged for 2 months (5.68, 5.49 and 5.68 respectively) were significantly lower (p < 0.05) than those obtained after the end of the manufacturing ripening period (5.96, 5.97 and 5.74 respectively), which confirmed the effectiveness of the fermentation process of acidification on beef. The high Lactic Acid Bacteria content (5.64-6.30 log cfu/g) confirmed this finding. Histamine was not detected in either of the products. The highest concentration of total biogenic amine (i.e. 1159.0 mg/kg) was found in fermented beef marinated with acid whey, whereas a total of only 209.8 mg/kg, was observed in control beef with nitrate and nitrite. N-nitrosamines were not detected in any of the ageing beef samples. CONCLUSIONS: In this study, marinating beef in acid whey did not inhibit the production of biogenic amines in the samples analyzed. The high concentration of FAAs, the potential precursor of BA, could lead to intense peptidase activity. The results obtained indicate that biogenic amines are not direct precursors for nitrosamines formation in fermented beef. The LAB strain from acid whey reduced the pH value during the first stages of ageing and ensured the microbiological safety of the product not only in the first stage of fermentation but also at the end of ageing (36 months).


Assuntos
Aminoácidos/análise , Aminas Biogênicas/análise , Produtos da Carne/análise , Nitrosaminas/análise , Carne Vermelha/análise , Animais , Bovinos , Contagem de Colônia Microbiana , Fermentação , Análise de Alimentos , Contaminação de Alimentos/análise , Microbiologia de Alimentos , Concentração de Íons de Hidrogênio , Lactobacillaceae/isolamento & purificação , Listeria monocytogenes/isolamento & purificação , Produtos da Carne/microbiologia , Nitratos/análise , Nitritos/análise , Carne Vermelha/microbiologia , Substâncias Reativas com Ácido Tiobarbitúrico/análise
18.
Acta Sci Pol Technol Aliment ; 14(4): 293-302, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-28068036

RESUMO

BACKGROUND: The aim of the study was to evaluate the potential of acid whey and set milk as a marinade in the traditional production of fermented eye round. METHODS: Studies involved assaying pH value, water activity (aw), oxidation-reduction potential and TBARS value, colour parameters in CIE system (L*, a*, b*), assaying the number of lactic acid bacteria and certain pathogenic bacteria after ripening process and after 60-day storing in cold storage. Sensory analysis and analysis of the fatty acids profile were performed after completion of the ripening process. RESULTS: Analysis of pH value in the products revealed that application of acid whey to marinate beef resulted in increased acidity of ripening eye round (5.14). The highest value of the colour parameter a* after ripening process and during storage was observed in sample AW (12.76 and 10.07 respectively), the lowest on the other hand was observed in sample SM (10.06 and 7.88 respectively). The content of polyunsaturated fatty acids (PUFA) was higher in eye round marinated in acid whey by approx. 4% in comparison to other samples. CONCLUSIONS: Application of acid whey to marinade beef resulted in increased share of red colour in general colour tone as well as increased oxidative stability of the product during storage. It also increased the content of polyunsaturated fatty acids (PUFA) in the product. All model products had high content of lactic acid bacteria and there were no pathogenic bacteria such as: L. monocytogenes, Y. enterocolitica, S. aureus, Clostridium sp.


Assuntos
Condimentos/microbiologia , Produtos Fermentados do Leite/microbiologia , Ácidos Graxos Ômega-6/análise , Conservação de Alimentos , Qualidade dos Alimentos , Carne/análise , Soro do Leite/química , Animais , Animais Endogâmicos , Bovinos , Condimentos/efeitos adversos , Condimentos/análise , Qualidade de Produtos para o Consumidor , Produtos Fermentados do Leite/efeitos adversos , Produtos Fermentados do Leite/análise , Gorduras Insaturadas na Dieta/análise , Ácidos Graxos Ômega-6/biossíntese , Fermentação , Armazenamento de Alimentos , Alimentos Orgânicos/efeitos adversos , Alimentos Orgânicos/análise , Alimentos Orgânicos/microbiologia , Concentração de Íons de Hidrogênio , Lactobacillales/crescimento & desenvolvimento , Lactobacillales/isolamento & purificação , Lactobacillales/metabolismo , Carne/efeitos adversos , Carne/microbiologia , Pigmentos Biológicos/análise , Polônia , Refrigeração , Sensação , Substâncias Reativas com Ácido Tiobarbitúrico/análise , Soro do Leite/efeitos adversos
19.
J Sci Food Agric ; 95(3): 628-34, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25044178

RESUMO

BACKGROUND: The influence of the addition of mustard seed and acid whey on the stability of nitrite-free organic fermented sausage during 90 days of vacuum storage was investigated by measuring primary and secondary products of lipid oxidation, changes in fatty acid composition and antioxidant capacity, as well as water activity. RESULTS: The native and autoclaved mustard seed with acid whey can be used in the composition of organic fermented sausage without nitrite with beneficial effect on pH, water activity, antioxidant capacity and oxidation stability during vacuum storage. The use of the combination of acid whey and mustard seed resulted in an effective decrease in pH of organic fermented sausage during fermentation. The inclusion of mustard seed to the sausage with acid whey significantly increased the capacity of stuffing to capture the radical cation ABTS. During the whole storage period the TBARS (thiobarbituric acid reactive substances) values of salted sausage samples with the addition of acid whey with combination of mustard seed were similar to the control sample with curing agent. CONCLUSION: In general, results suggest that mustard seed with combination of acid whey can be successfully applied to protect organic fermented sausages without nitrite from lipid oxidation.


Assuntos
Manipulação de Alimentos/métodos , Conservação de Alimentos/métodos , Peroxidação de Lipídeos , Produtos da Carne/análise , Proteínas do Leite , Mostardeira , Sementes , Animais , Reatores Biológicos , Contagem de Colônia Microbiana , Qualidade de Produtos para o Consumidor , Fermentação , Conservantes de Alimentos , Alimentos Orgânicos , Humanos , Concentração de Íons de Hidrogênio , Nitritos , Oxirredução , Especiarias , Suínos , Proteínas do Soro do Leite
20.
Meat Sci ; 96(2 Pt A): 750-6, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24200566

RESUMO

The aim was to determine the effects of sea salt, acid whey, native and autoclaved mustard seed on the physico-chemical properties, especially colour formation, microbial stability and sensory evaluation of non-nitrite cooked sausage during chilling storage. The cooked pork sausages were divided into 4 groups (group I--control sausages with curing salt (2.8%) and water (5%) added; group II--sausages with sea salt (2.8%) and acid whey (5%) added; group III--sausages with sea salt (2.8%), acid whey (5%) and mustard seed (1%) added; group IV--sausages with sea salt (2.8%), acid whey (5%) and autoclaved mustard seed (1%) added). Instrumental colour (L*, a*, b*), oxygenation index (ΔR), 650/570 nm ratio, heme iron, pH value and water activity (aw) were determined 1 day after production and after 10, 20 and 30 days of refrigerated storage (4 °C). Sensory analysis was conducted immediately after production (day 1). Microbial analysis (lactic acid bacteria, total viable count, Clostridium spp.) was determinated at the end of storage (30 days). The autoclaved mustard with acid whey can be used at 1.0% (w/w) of model cooked sausages with beneficial effect on physico-chemical and sensory qualities of no-nitrite sausage. This product can be stored at refrigeration temperature for up to 30 days, in vacuum, with good acceptability. The colour, visual appearance and overall quality of samples with autoclaved mustard seed and acid whey were similar to the control with curing agent.


Assuntos
Culinária , Produtos da Carne/análise , Mostardeira/química , Nitritos/análise , Sementes/química , Animais , Fenômenos Químicos , Clostridium/crescimento & desenvolvimento , Clostridium/isolamento & purificação , Contagem de Colônia Microbiana , Cor , Contaminação de Alimentos/prevenção & controle , Manipulação de Alimentos , Microbiologia de Alimentos , Conservação de Alimentos , Qualidade dos Alimentos , Armazenamento de Alimentos , Heme/análise , Humanos , Concentração de Íons de Hidrogênio , Lactobacillaceae/crescimento & desenvolvimento , Lactobacillaceae/isolamento & purificação , Produtos da Carne/microbiologia , Viabilidade Microbiana , Refrigeração , Cloreto de Sódio na Dieta/análise , Suínos , Paladar , Vácuo , Água/análise
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