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1.
Health Educ Behav ; 51(5): 677-690, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39099318

RESUMO

BACKGROUND: Religious institutions play a crucial role in health promotion and hold significant influence in the public health field. AIM: The aim of this review is to examine outcomes of health-promoting interventions involving the use of mosques as the intervention venue, its role in promoting health behavior change, and the role of theory in each intervention. METHODS: A scoping review was conducted across 17 databases for relevant publications published up to and including August 2023 that involved the use of mosques as the intervention venue. Fourteen articles met inclusion criteria and were reviewed. RESULTS: The studies featured a wide range of interventions. However, only eight of these studies integrated theoretical frameworks into their approaches, indicating a need for more structured guidance in this field. These theoretical frameworks included Participatory Action Research (PAR), the theory of planned behavior, behavior-change constructs, the patient-centered outcomes research (PCOR) framework, and prolonged exposure techniques within Islamic principles. The review identified three main health-focused intervention categories: mental health, prevention, and communication, each providing valuable insights into initiatives within Muslim communities. CONCLUSIONS: This review underscores the significance of inclusive and culturally sensitive health interventions, emphasizing the effectiveness of faith-based approaches in improving health outcomes, promoting positive health behaviors, and addressing communication and cultural barriers. The reviews findings stress the need for further research that incorporates theoretical frameworks and tailored interventions to meet the specific cultural needs of these communities, ultimately contributing to enhanced well-being within them.


Assuntos
Promoção da Saúde , Humanos , Promoção da Saúde/métodos , Comportamentos Relacionados com a Saúde , Saúde Pública , Islamismo
2.
Breastfeed Med ; 19(9): 734-741, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39049793

RESUMO

Background/Objective: Although the benefits of breastfeeding are well-documented and widely recognized, reports indicate that optimal breastfeeding rates are low in Arabic-speaking countries. This is a significant concern given the health benefits associated with breastfeeding for both infants and mothers. Previous research has shown that education interventions can increase breastfeeding knowledge, attitudes, and practices in Arabic-speaking populations. The social media platform YouTube holds significant potential for distributing customized health education for diverse audiences; specifically, this platform has the potential to empower mothers and normalize long-term breastfeeding. The aim of this study was to evaluate the quality of YouTube videos on breastfeeding available in the Arabic language. Methods: We used standard procedures to search YouTube for Arabic breastfeeding videos posted on YouTube in December 2023. Videos were evaluated using the three scales of the DISCERN quality evaluation instrument (reliability, information quality, video quality) and total score. Comparative statistics were generated. Results: In total, 165 videos met the inclusion criteria, with 29.7% in the Education category; 43.6% were in Egyptian Arabic dialect. Almost all (91.75%) of the educational videos had a "medium" quality assessment. Educational videos and those using health professionals had higher quality assessments than those in other categories or done with other speakers. Conclusion: The results of this review suggest that most content on the topic of breastfeeding was of only medium reliability and informational quality. New mothers seeking breastfeeding information or support may be in need of specific problem-solving information at a time when they are living with the often-difficulty reality of caring for a newborn or very young infant. There is a clear need for accurate, culturally congruent information to effectively support breastfeeding in Arabic-speaking countries. Future efforts should focus on improving the quality of online health education content, with implications for public health strategies and policy development.


Assuntos
Árabes , Aleitamento Materno , Educação em Saúde , Promoção da Saúde , Mães , Mídias Sociais , Humanos , Feminino , Promoção da Saúde/métodos , Educação em Saúde/métodos , Mães/educação , Mães/psicologia , Gravação em Vídeo , Conhecimentos, Atitudes e Prática em Saúde , Lactente , Recém-Nascido , Idioma
3.
Prev Med Rep ; 44: 102808, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39071241

RESUMO

Objective: Saudi Arabia (SA) ranked first in soft drink consumption in the Middle East. A decrease in consumption was recorded after a selective 50% increased taxation policy in 2018. This study aimed to assess soft drinks consumption patterns among Saudi Arabian adults and examine the association between different attitudes and patterns post-taxation. Methods: This cross-sectional study was conducted from October 2022 to March 2023, involving 1,935 Saudi adults aged 20-60 residing in Saudi Arabia. Participants completed online surveys using a validated questionnaire assessing sociodemographic characteristics, soft drink consumption patterns, and attitudes toward soft drinks. Chi-square and odds ratio (OR) tests were used to assess associations between sociodemographic characteristics, soft drink consumption frequency/quantity, and change in consumption patterns owing to selective taxation. Additionally, t-tests, Spearman's coefficient, and hierarchical multiple linear regression were used to measure differences in attitudes and linear relationships. Results: Overall, 7.5% of the participants reported daily soft drink consumption, with 51.8% of these consuming less than one can per day and 41.2% consuming one can per day. Most (66.2%) reported no change in consumption post-taxation. Attitudes toward soft drink consumption varied significantly, with most agreeing on its health risks but also enjoying the drinks. Multiple regression analysis identified age, education, income, consumption frequency/quantity, and impact of taxation as significant predictors of overall attitudes toward soft drinks. Conclusions: After taxation, 20% of participants reduced soft drink consumption, underscoring the importance of addressing taxation and intrinsic motivations to foster lasting changes in attitudes and behaviors towards soft drinks.

4.
Health Promot Pract ; : 15248399241237950, 2024 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-38528466

RESUMO

Breastfeeding is vital to a child's lifelong health and has significant positive benefits to mother's health. World Health Organization recommends beginning exclusively breastfeeding within the first hour after birth and continuing during the first 6 months of infant's life. The purpose of this review is to identify and examine breastfeeding interventions conducted across the Spanish-speaking countries. A scoping review of the literature was conducted across 14 databases for relevant publications published through April 2023 to find studies in Spanish-speaking countries that involved breastfeeding as an intervention component. A total of 46 peer-reviewed articles were included in this review, across 12 Spanish-speaking countries. Participants ranged from pregnant women, mothers, mother-infant pair, and health care professionals. Intervention at the individual level in combination with support from trained health care professionals or peer counselors seemed to have higher improvements in breastfeeding rates. The greatest improvement in exclusively breastfeeding for 6 months was seen in interventions that included prenatal and postnatal intensive lactation education, for a period of 12 months. The most effective interventions that improved rates of any breastfeeding included promotional activities, educations workshop, and training of health care staff along with changes in hospital care. Breastfeeding promotion is an economical and effective intervention to increase breastfeeding behavior and thereby improving breastfeeding adherence across Spanish-speaking countries.

5.
Iran J Public Health ; 52(10): 2083-2089, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37899936

RESUMO

Background: The Syrian Arab Republic (SAR) is experiencing high rates of malnutrition. While many adults experience overweight and obesity, as a direct result of the continuing conflict, SAR is also noted as one of the most food-insecure regions in the Arab world. To combat the health impacts and outcomes related to diet and dietary behaviors, trained nutrition professionals are needed. We aimed to examine current nutrition-affiliated programs offered in post-secondary institutions in the SAR. Methods: The search was conducted between Jan and Feb 2021. An electronic review of universities and colleges' websites, department webpages, and academic programs' homepages and resources of all the private and public universities in SAR was conducted to find programs related to nutrition, nutrition sciences, and dietetics. Results: Only 13%, or 4 out of 30 SAR colleges and universities had bachelor's programs in nutrition or nutrition science, and none had nutrition programs at the graduate or terminal degree levels. Conclusion: A pathway for integration of graduates from nutrition sciences into the healthcare and public health workforce should be defined and an understanding of the value of those with a degree in nutrition should be cultivated in clinical and community care settings. Partnering with existing or creating independent organizations charged with defining the scope of practice and ensuring educational quality and competence of graduating students, as well as readiness to practice as part of a healthcare team or in a public health nutrition role will be integral to moving the nutrition profession forward in the SAR.

6.
Curr Nutr Rep ; 12(4): 845-863, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37796393

RESUMO

PURPOSE OF REVIEW: Over 11 million individuals are incarcerated globally, facing health challenges such as obesity, diabetes, and cardiovascular disease, possibly exacerbated by prison diets. The objective of this scoping review is to explore the various available types of nutrition education interventions that currently exist in the literature applied in prison settings. RECENT FINDINGS: Utilizing the PRISMA Extension for Scoping Reviews, 19 databases were searched for studies on nutrition interventions in prisons from 2000 to May 2023, guided by the "PICO" structure. Inclusion criteria encompassed articles in five languages from peer-reviewed journals focusing solely on nutrition education interventions. Rayyan QCRI software was utilized for screening and data extraction. Fifteen international studies were analyzed, covering various countries and targeting different populations in prisons. Interventions varied from nutrition education to comprehensive health programs. The outcomes were inconsistent, with some showing health improvements and others encountering challenges. Few utilized established theoretical frameworks, indicating a research gap. The range of interventions highlights the potential complexity of nutrition education interventions within prisons. Implementing recognized theoretical frameworks may enhance effectiveness. The diverse outcomes highlight the challenges in creating impactful programs, emphasizing foundational issues. Recommendations focus on rigorous research designs and understanding prison-specific complexities. Nutrition education interventions in incarcerated settings present varied results, emphasizing the need for well-structured, theoretically grounded, and carefully evaluated programs. Future strategies should recognize the multifaceted nature of correctional facilities, aiming for holistic approaches to improve health in prisons.


Assuntos
Terapia Nutricional , Prisões , Humanos , Promoção da Saúde
7.
Sultan Qaboos Univ Med J ; 23(3): 320-327, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37655074

RESUMO

Objectives: This study assessed the stigmatisation of obesity among a sample of the general population in Riyadh and its association with the perception of controllability. Methods: A cross-sectional analytical study was conducted in Riyadh, Saudi Arabia, during January-February 2021. The data were collected through a self-administrated online questionnaire. Statistical analysis was performed using John's Macintosh Project, Version 16.0.0. Results: A total of 525 participants were recruited via convenience sampling. The majority of the participants exhibited a low level of stigma towards obesity (72.8%), and gender and BMI were significantly associated with the level of stigma (P = 0.0023 and 0.0360, respectively). The association between the perception of controllable factors and the level of stigma was also significant (P = 0.0001). Conclusion: A significant association was found between the stigmatisation of obesity and the perception of controllability among the general population in Riyadh. Recommendations should be based on joint international consensus statements for ending obesity stigmatisation in different settings and categories; healthcare service providers and obese patients should be educated on the relationships demonstrated in these findings.


Assuntos
Obesidade , Estigma Social , Humanos , Estudos Transversais , Arábia Saudita , Obesidade/epidemiologia , Percepção
8.
Health Promot Int ; 38(4)2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37611160

RESUMO

Arab countries are doubly burdened with undernutrition as well as overweight and obesity. To provide guidance to those looking to address concerns of obesity and overweight among children in this region, the current review bridges an existing knowledge gap and systematically characterizes and evaluates the available scientific evidence pertaining to school-based nutrition interventions completed to date across the Arab world. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and relevant keywords, terms and phrases, a search of the literature across 14 databases for school-based nutrition interventions implemented in this region was conducted. Out of 1568 articles from 14 databases, 38 full-text articles meeting the inclusion criteria were retrieved. Further assessment for eligibility excluded 23 articles and included one article from hand-searching references, leaving 16 articles in the final analysis. Most articles (n = 7) with the implementation of 5 months or longer found strong positive and significant impacts on limiting sweets consumption, increased dietary knowledge, self-efficacy, breakfast and fruit and vegetable consumption, among others. We also found evidence (n = 5) that teachers trained by experts such as dietitians and pediatricians can effectively implement nutrition interventions that achieve the intended outcomes. Training teachers to implement theory-based nutrition and health promotion curricula serves as a potential solution to improving nutrition knowledge, health behaviors and dietary practices among children living in Arab countries. Appropriately designed and implemented nutrition interventions can positively impact nutrition knowledge, health and diet-related behaviors in children and adolescents in this region.


Assuntos
Árabes , Sobrepeso , Adolescente , Criança , Humanos , Instituições Acadêmicas , Obesidade , Mundo Árabe
9.
Asia Pac J Clin Nutr ; 32(2): 196-205, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37382317

RESUMO

BACKGROUND AND OBJECTIVES: Assessing knowledge, self-efficacy, and practice among a given population us-ing a validated and reliable questionnaire is crucial. The aim of this study was to translate, validate, and test the reliability of the knowledge, self-efficacy, and practice in the Arabic population. Methods and Study De-sign: A previously published knowledge, self-efficacy, and practice nutrition questionnaire was translated and validated into Arabic. A panel of translation and nutrition experts from Arab countries participated in translation and testing validity. A convenience sampling technique was used to recruit participants across 22 Arab countries. An online self-administered questionnaire was completed twice with an interval of 2 weeks. Tests of validity (face and content) and reliability (consistency and test-retest reliability) were used. RESULTS: A total of 96 participants had a mean age of 21.5 years, 68.7% were female, and 80.2% were students. The mean expert proportional content validity index scale was 0.95, and intra class correlation values ranged from 0.59 to 0.76; all of these values were highly statistically significant at retest. CONCLUSIONS: The Arabic version of the questionnaire provided valid and reliable results for assessing knowledge, self-efficacy, and practice among Arab adolescents and young adults. This tool could assess nutritional education programs in a community setting and educational institutions targeting this population in Arab countries.


Assuntos
Árabes , Autoeficácia , Adolescente , Feminino , Humanos , Adulto Jovem , Adulto , Masculino , Reprodutibilidade dos Testes , Educação em Saúde , Inquéritos e Questionários
10.
PLoS One ; 18(6): e0286656, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37289751

RESUMO

AIM: To measure the factors influencing on the adoption of antenatal care conversation mapping among health care providers in Riyadh (Saudi Arabia), using the diffusion innovation theory. METHODS: 88 healthcare providers (Riyadh) were recruited using a non-probability convenient sampling technique were trained on how to use a newly developed antenatal care conversation map. Data was collected by self-administrated questionnaire on health education services, adoption of conversation map and diffusion of innovation variables. The JMP statistical software from SAS version 14 was used to perform data analysis. RESULTS: Printable tools were most common as used by 72.7% of participants and 83.0% of them did not hear about conversation map. The total mean score of diffusion of innovation variables showed was in general high. The total mean score of relative advantage and observability was high in participants aged between 40 to less than 50 years, while the total mean score of compatibility, complexity, and trialability was high in participants aged from 50 years and more. Significant differences were obtained in both compatibility and trialability considering the health educators specialty, p = 0.03 and p = 0.027 respectively. The linear correlations between diffusion of innovation variables was significantly positive (p-value <0.01). CONCLUSION: All of diffusion of innovation variables were positive as per the opinion of the participants. Applying the conversation map on other health topics in Saudi Arabia and other Arabic-speaking countries is warranted. Measuring and evaluating the adoption rate of conversation mapping among health care providers on other health topics should be explored.


Assuntos
Pessoal de Saúde , Cuidado Pré-Natal , Humanos , Feminino , Gravidez , Adulto , Arábia Saudita , Comunicação , Educação em Saúde , Difusão de Inovações
11.
Matern Child Health J ; 27(5): 774-794, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36729325

RESUMO

INTRODUCTION: Low prevalence of exclusive breastfeeding in the Arab world is concerning and suboptimal breastfeeding is a leading child health risk factor in several Arab States. Breastfeeding education has the capacity to improve breastfeeding knowledge and practice, thus positively impacting infant and maternal health. The purpose of this review is to identify and examine the impact of breastfeeding promotion interventions across the Arab world. METHOD: A scoping review of the literature was conducted across seventeen databases for relevant publications published through October 2021 to find studies in Arab countries, that involved breastfeeding as an intervention component. Twenty-one articles met inclusion criteria and were reviewed. RESULTS: Individual and community based educational interventions offer the opportunity to positively impact the knowledge, attitudes, and practices of breastfeeding in new mothers in Arab countries. Increased breastfeeding has the potential to lead to improved neonate and maternal health. In addition to significant benefits found across individual and community-based interventions in a variety of Arab countries, there is also evidence that interventions that improve the knowledge of health care professionals and/or the practices of a health care system can contribute to subsequent increases in breastfeeding rates. DISCUSSION: Breastfeeding education is a low-cost and high-impact public health tool that can impact infant and maternal health and potentially increase breastfeeding adherence in the Arab world.


What is already known on this subject? Breastfeeding has major long-term effects on the health and development of children as well as women's health. Combined health systems and community interventions more than double exclusive breastfeeding rates globally. The most cost-effective ways to promote exclusive breastfeeding include counselling and supportive interventions in multiple settings. What this study adds? Multi-component educational and supportive interventions increase breastfeeding initiation and duration among mothers in the Arab world. The most successful interventions among Arab women include education as well as pre- and post-partum support. Education and training for health professionals on the importance of breastfeeding can have broad-reaching impact on improving breastfeeding rates.


Assuntos
Aleitamento Materno , Mães , Lactente , Recém-Nascido , Feminino , Criança , Humanos , Mães/educação , Educação em Saúde , Promoção da Saúde , Saúde Materna
12.
Am J Health Promot ; 37(3): 366-374, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36191140

RESUMO

PURPOSE: The present study conducted a social media content analysis on videos describing the Mediterranean Diet (MedDiet) posted onYouTube. SETTING: YouTube TM online video sharing and social media platform. METHOD: Three independent content experts evaluated 141 YouTube videos on the MedDiet in August 2020 utilizing standard rubric and protocol. Data abstracted include media source(s) of posted videos, and viewer exposure/engagement metrics. Information quality was measured by each content expert independently through use of the DISCERN instrument, a 16-item tool designed to assess reliability, dependability, and trustworthiness of an online source, scores were then aggregated for analysis. RESULTS: A majority of videos (n = 102, 72.3%) were educational in nature. A third of videos were less clear and less credible on information presented (n = 46, 32.6%). Most videos were posted by an individual (n = 79, 56%), and the majority of videos were rated as medium quality (n = 88, 62.4%). Overall level of user engagement as measured by number of "likes," "dislikes," and user comments varied widely across all sources of media. Exploratory correlation analysis suggests that the number of a video's views, comments, likes, and dislikes are not correlated with quality. CONCLUSION: Study findings suggest that MedDiet health promotion and education via YouTube has the potential to reach and inform clients; however, existing video content and quality varies significantly. Future intervention research focused on MedDiet should further examine possible predictors of high quality MedDiet content utilizing diverse online video sharing platforms.


Assuntos
Dieta Mediterrânea , Mídias Sociais , Humanos , Reprodutibilidade dos Testes , Gravação em Vídeo/métodos , Promoção da Saúde , Disseminação de Informação/métodos
13.
Digit Health ; 8: 20552076221136939, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36353694

RESUMO

Objective: To assess the patterns, prevalence, and perceptions of the benefits and risks of using social media as a source of weight loss information among Saudi adults. Methods: In this cross-sectional study, convenient snowball sampling was used to recruit Saudi adults. A self-report questionnaire containing the following five sections was distributed: sociodemographic information, the pattern of social media use, use of social media to obtain weight loss information, perception of benefits, and perception of risks of using social media. A Chi-square test was used to identify differences according to participants' demographics. Results: A total of 420 Saudi adults were included in the study. Most Saudi adults (43.3%) used social media for more than four hours a day, and 88.6% used WhatsApp. The prevalence of social media use for weight loss information was 89.2% among Saudi adults. Significant associations were found between the use of social media for weight loss information and age (<33 years old) and monthly income (<5000 Saudi Arabian Riyal) (p ≤ 0.012). Of the participants, 71.7% believed that social media is "always" or "frequently" an easily acceptable way to obtain weight loss information. Moreover, 36% of Saudi adults believed that weight loss information on social media could be scientifically inaccurate, and 61% believed that it could be posted solely for marketing and financial purposes. Conclusion: The findings of this study show that Saudi adults have a high prevalence of social media use to obtain weight loss information. The benefits and risks of using social media as a source of weight loss information were also perceived to be high among Saudi adults.

14.
Med Sci Educ ; 32(6): 1273-1278, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36193111

RESUMO

Yemen is noted as one of the most food-insecure countries in the Arab world coupled with high rates of malnutrition. To address the public health outcomes related to nutrition, trained nutrition professionals are needed. This report provides a snapshot of current nutrition-affiliated programs offered in postsecondary institutions in Yemen. Partnering with or creating independent organizations responsible for defining the scope of practice is warranted. Additionally, ensuring educational quality, program accreditation, and competence of graduating students and readiness to practice will be central to progressively moving Yemen's dietetics profession forward.

15.
Pan Afr Med J ; 42: 79, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36034024

RESUMO

Introduction: evaluating the sodium content of staple foods is essential for implementing a salt reduction strategy. In Morocco, bread is a major contributor to sodium intake. However, currently few studies have been carried out to assess the salt content in bread. Our study aimed to estimate the sodium and salt content of white bread available in artisanal and industrial bakeries in the twelve regions of Morocco. Methods: it is a cross-sectional study of the sodium content of white bread available for sale in artisanal and industrial bakeries in Morocco (N=120). Inductively coupled plasma mass spectrometry (ICP-MS) was used to quantify the sodium content of the bread. The percentage of samples meeting the recommendations and bread contribution to the daily salt intake was calculated. Results: the results of our study show that the mean levels of sodium and salt added to bread samples were 5.7 ± 1.5 g/Kg and 14.5 ± 3.7 g/Kg, respectively. With an average of 4.4 ± 0.5 g/Kg and 11.2 ± 1.2 g/Kg for artisanal bread and an average of 7.0 ± 0.8 g/Kg and 17.8 ± 2.1 g/Kg for industrial bread, respectively. Daily salt intake from bread consumption (500 g/d/person) is estimated at 5.6 g/d (52.8% of total salt intake) for artisanal bread and 8.9 g/d (84% of total salt intake) for industrial bread. Conclusion: bread salt content in Morocco exceeds the recommended threshold of the national federation of bakery and pastry and health authorities. Further efforts are necessary to increase knowledge and awareness of bakers and to teach them how to reduce salt content without affecting the flavor and the quality of their products.


Assuntos
Pão , Cloreto de Sódio na Dieta , Estudos Transversais , Humanos , Espectrometria de Massas , Sódio , Cloreto de Sódio
16.
J Health Care Poor Underserved ; 33(2): 649-658, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35574867

RESUMO

BACKGROUND: Sub-Saharan African (SSA) countries face the multipart burden of nutrition-related disease characterized by a high incidence of undernutrition, overweight, obesity, and associated non-communicable disease. Local and regional research to support a robust public health response is necessary. No evaluation of the availability and scope of nutrition-related journals within SSA has been published. METHODS: An electronic search for peer-reviewed journals was conducted using seven publicly accessible databases. RESULTS: Ten journals were identified including journals from Kenya (4 journals), Nigeria (3 journals), South Africa (2 journals), and Ghana (1 journal) with eight journals in active production. All actively publishing journals are available only as English publications. CONCLUSION: An increased focus on evidence-based research through local and regional journal publications is necessary to develop and maintain public health nutrition programs. Active journals related to nutrition and food sciences are very limited in this comparatively large area and require more support at local, regional, and legislative levels.


Assuntos
Publicações Periódicas como Assunto , Humanos , Quênia , Nigéria , Estado Nutricional , Saúde Pública
17.
Sci Rep ; 12(1): 8160, 2022 05 17.
Artigo em Inglês | MEDLINE | ID: mdl-35581215

RESUMO

Mahonia bealei is one of the important members of the genus Mahonia and Traditional Chinese Medicine (TCM). Several compounds isolated from this plant have exhibited useful biological activities. Polysaccharides, an important biomacromolecule have been underexplored in case of M. bealei. In this study, hot water extraction and ethanol precipitation were used for the extraction of polysaccharides from the stem of M. bealei, and then extract was purified using ultrafiltration membrane at 50,000 Da cut off value. Characterization of the purified M. bealei polysaccharide (MBP) was performed using Fourier Transform Infrared Spectroscopy (FT-IR), along with Scanning Electron Microscopy (SEM), X-ray crystallography XRD analysis and Thermal gravimetric analysis (TGA). The purified polysaccharide MBP was tested for antioxidant potential by determining its reducing power, besides determining the DPPH, ABTS, superoxide radical, and hydroxyl radical scavenging along with ferrous ion chelating activities. An increased antioxidant activity of the polysaccharide was reported with increase in concentration (0.5 to 5 mg/ml) for all the parameters. Antimicrobial potential was determined against gram positive and gram-negative bacteria. 20 µg/ml MBP was found appropriate with 12 h incubation period against Escherichia coli and Bacillus subtilis bacteria. We conclude that polysaccharides from M. bealei possess potential ability of biological importance; however, more studies are required for elucidation of their structure and useful activities.


Assuntos
Berberis , Mahonia , Antioxidantes/química , Sequestradores de Radicais Livres , Mahonia/química , Polissacarídeos/farmacologia , Espectroscopia de Infravermelho com Transformada de Fourier , Água
18.
RSC Adv ; 12(12): 7574-7583, 2022 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-35424683

RESUMO

Tetracycline (TC) is widely used as a veterinary drug, and its residue in livestock products could enter the human body and cause damage. In this study, we developed an eco-friendly approach that utilized pomelo peel as a carbon source to synthesize new water-soluble N-doped carbon dots (P-NCDs) with blue fluorescence, obtaining a high quantum yield of up to 76.47% and achieving the goal of turning waste into value. Our prepared P-NCDs can selectively recognized TC, and their fluorescence was quenched based on the IFE. P-NCDs could measure the TC concentration in the linear range of 0-100 µmol L-1 with a detection limit (LOD, S/N = 3) as low as 0.045 µmol L-1. Furthermore, we have successfully applied our P-NCDs to the detection of TC in milk samples with convincing results within 90 s. Overall, our newly synthesized fluorescent sensor, P-NCDs, demonstrated huge potential to become an alternative way to detect TC in a simple, efficient, sensitive way without using any special instruments.

19.
Antioxidants (Basel) ; 11(2)2022 Feb 09.
Artigo em Inglês | MEDLINE | ID: mdl-35204220

RESUMO

The by-product of sesame seed coats from the tahini industry was used for the extraction of bioactive compounds as novel antioxidants. This study was designed to evaluate the effect of a natural antioxidant on the quality of refined olive oil (ROO) stored at 60 ± 1 °C for up to 48 days. The lyophilized sesame seed coats extract (LSSCE) was placed into fresh ROO at three levels, i.e., 200, 400, and 600 mg kg-1, and compared with 200 mg kg-1 BHT (reference) and without antioxidant (control). LSSCE exhibited high phenolic (105.9 mg GAE g-1) and lignin (6.3 mg g-1) contents as well as antioxidant activity based on HPLC/DAD. In ROO samples, Including LSSCE, the values of peroxide, p-anisidine, K232, and K270 were remarkably lower than control during storage. The kinetic rate constant (k) of oxidation indicators was the lowest in ROO samples containing BHT and LSSCE 600 mg kg-1compared with other treatments. LSSCE improved the organoleptic acceptability of ROO samples up to 48 days of storage. Moreover, the shelf life (assuming a Q10 value of 2.0 for lipid oxidation) of ROO treated with LSSCE was increased. The findings revealed that LSSCE is a promising natural antioxidant in delaying oxidation, enhancing oil stability, and prolonging the shelf life (~475 days at ambient temperature).

20.
Nanomaterials (Basel) ; 12(4)2022 Feb 19.
Artigo em Inglês | MEDLINE | ID: mdl-35215021

RESUMO

Nitrogen-doped carbon dots exhibiting excitation-dependent full-color emissions (F-NCDs) were prepared via the one-step hydrothermal method with citric acid and phenylenediamine. Specifically, the emission wavelength of the F-NCDs tuned from 452 nm to 602 nm due to the introduction of new energy levels by C=O and C=N functional groups. We exploited its stability in illumination, ionic strength, and pH, as well as its specificity, sensitivity, especially in ascorbic acid (AA) detection. F-NCDs could measure the AA concentration in the linear ranges of 0~0.1 and 0.1~1 mmol/L with the detection limit (LOD, S/N = 3) as low as 2.6 nmol/L. Additionally, we successfully detected AA in bovine serum with our F-NCDs and obtained the result within 1 min. Because of full-color emission features, we believe our F-NCDs have a great potential in fluorescent sensor detection.

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