Phenolic acid contents of kale (Brassica oleraceae L. var. acephala DC.) extracts and their antioxidant and antibacterial activities

Ayaz, Faik Ahmet; Hayırlıoğlu-Ayaz, Sema; Karaoğlu, Şengül Alpay; Grúz, Jiří; Valentová, Kateřina; Ulrichová, Jitka; Strnad, Miroslav

doi:10.1016/j.foodchem.2007.07.003

Cited by 161 publications

(142 citation statements)

References 25 publications

Supporting

Mentioning

123

Contrasting

Unclassified

Order By: Relevance

“…leaves and seeds, had shown to possess antimicrobial property against some bacteria, viz. Staphylococcus aureus Rosenbach, Enterococcus faecalis Schleifer and KilpperBalz, Bacillus subtilis Cohn and Moraxella catarrhalis Morax (Ayaz et al 2008). Polyphenols also contribute towards the taste, colour, odour and preservation of fruits as well as processed products.…”

mentioning

confidence: 99%

Effect of pasteurization temperature on quality of aonla juice during storage

et al. 2011

View full text Add to dashboard Cite

A study was carried out to detect the changes in colour and quality attributes of aonla juice during storage after pasteurization at different temperatures. After extracting juice from aonla cv. Chakaiya, it was pasteurized at five different temperatures and preserved with 500 ppm SO 2 in PET bottles under ambient conditions. Juice was periodically analysed for colour and chemical characters up to 9 months of storage. Though the contents of ascorbic acid and polyphenols in juice decreased with increase in storage period, the effect of pasteurization temperature was not significant. High degree of browning was observed in juice heated at higher temperatures (90 and 95°C) as compared to lower temperatures (75 and 80°C) throughout the storage period as indicated by increase in NEB values. The degree of browning was further confirmed by higher negative numerical values of whiteness index in Hunter's scale for intensity of colour. HPLC data indicated that content of gallic acid in juice decreased initially but increased sharply as the storage period prolonged. Higher amount of gallic acid was detected after 9 months of storage in juice pasteurized at 95°C than in juice heated at 75°C. The contents of kaempferol and caffeic acid decreased throughout the storage period irrespective of pasteurization temperature. Though least browning was observed in juice pasteurized at 75°C, but microbial growth was observed after 9 months of storage. Hence, pasteurization temperature of 80°C was found optimum for preservation of aonla juice under ambient conditions.

show abstract

mentioning

confidence: 99%

Effect of pasteurization temperature on quality of aonla juice during storage

et al. 2011

View full text Add to dashboard Cite

show abstract

“…acephala DC) which revealed its health benefits (Ayaz et al, 2008;Sousa et al, 2008;Lemos et al, 2011). The appearance of Kale leaves is compromised by dehydration and discoloration due to post-harvest time exposure.…”

Section: Introductionmentioning

confidence: 99%

Longitudinal data assessment of global stability index in kale leaves

Azevedo

Júnior

Pedrosa

et al. 2016

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Kale plants are usually sold "in natura" in street markets and malls. Kale leaves can have their appearance compromised by dehydration and discoloration due to increased postharvest time exposure. We aimed to analyze the Global Stability Index (GSI) in kale accessions by means of repeated measurement analysis and curve grouping as a complementary form of superior sample identification with regard to post-harvest preservation. Thirty kale accessions were evaluated using a randomized block design with four blocks and five plants per plot. Two commercial leaves per plant were collected, and kept on workbenches in the shade at a temperature of 18 ± 1 °C. Subsequently, the degrees of discoloration and dehydration, total chlorophyll content, and accumulated fresh mass loss were evaluated over a 15-day period. From these data, the GSI was calculated for each day of evaluation. In addition, using mixed models, thirteen co-variance structures were tested. For graphical analysis, thirteen linear and non-linear models were assessed followed by curve grouping using multivariate analysis. The GSI was efficient for differentiating accessions, which became an important tool in post-harvest studies. GSI values were not equally correlated, therefore the use of mixed models became an important approach.The unstructured matrix was the best fit to model the dependence of error. The Melow I model was the best fit for studying the GSI. The accessions UFVJM-10, UFLA-1, COM-1, UFVJM-32, COM-3, UFVJM-8, UFVJM-36 and UFVJM-24, belonging to 3 and 5 clusters, are recommended for crop cultivation and as parental material in breeding programs.

show abstract

“…ZALCMANN; TALALAY, 2001;NAKAMURA et al, 2007). Estes compostos e seus produtos de hidrólise têm sido vastamente explorados como antioxidantes naturais, estando também em evidência como substâncias com propriedades antimicrobianas (LUCIANO et al, 2008;SHIN;MASUDA;NAOHIDE, 2004;WEN et al, 2003;BALASUNDRAM;SUNDRAM;SAMMAN, 2006). Os subprodutos agroindustriais são boas fontes destes compostos e abrem espaço para uma série de perspectivas, principalmente para sua aplicação na indústria de alimentos.…”

Section: Resumo Potencial Antimicrobiano De Resíduos Agroindustriais unclassified

“…No grupo dos compostos fenólicos, são explorados os ácidos fenólicos, os flavonóides e os taninos, e dos derivados dos glucosinolatos, os isotiocianatos são os mais difundidos com potencial antimicrobiano (AYAZ et al, 2008;BAYDAR;ÖZKAN;SAĞDIÇ, 2004;BLAŽEVIĆ et al, 2010 FLEMING et al, 1985;MACDONALD et al, 2005;LYYTIKAINEN et al, 2000;MIETTINEN et al 1999;GOULET et al, 1998 …”

Section: Resumo Potencial Antimicrobiano De Resíduos Agroindustriais unclassified

“…Suas concentrações podem variar em função dos órgãos da planta, idade, espécie e estado de desenvolvimento (predominando em frutos verdes). Em uma mesma planta podem ser encontrados tanto os taninos hidrolisáveis quanto os condensados (BALASUNDRAM; SUNDRAM; SAMMAN, 2006). O papel biológico de muitos taninos, nas plantas, está relacionado com a proteção contra insetos, bactérias e fungos, e assim como outros compostos fenólicos, demonstram propriedades antioxidantes, antimutagênica e anticarcinogênicas (GÜLÇIN et al, 2010;SCALBERT, 1991;WU et al, 2004).…”

Section: Taninosunclassified

See 1 more Smart Citation

Potencial antimicrobiano de resíduos agroindustriais sobre Listeria monocytogenes

Corrêa¹

View full text Add to dashboard Cite

Antimicrobial potential of agroindustrial residues on Listeria monocytogenesThe phenolic compounds and glucosinolates have been investigated for their antimicrobial activity against several pathogenic microorganisms, including Listeria monocytogenes, a dangerous contaminant of food. This study has as main objective valuate agroindustrial residues with activity against Listeria monocytogenes, well as evaluate the chemical composition, aimed at their application in food industry. In this work we analyzed 23 agroindustrial residues. The extracts of these residues were prepared from five solvents (hexane, chloroform, ethyl acetate, ethanol:water (80:20 v/v) and water), which were used in evaluating the antimicrobial potential against Listeria monocytogenes by the agar diffusion test. The extracts that tested positive were selected for analysis of Minimum Inhibitory Concentration (MIC), Minimum Bactericidal Concentration (MBC), flow cytometry and chemical composition by GC-MS. L. monocytogenes showed sensibility only to aqueous extracts of stalk of broccoli and peel pumpkin and chloroform extract of papaya seed showing MIC values of 102.4 mg / mL,> 102.4 mg / mL and 6.4 mg / mL, respectively. The flow cytometry analysis showed changes in cell morphology, front of to tested extracts. The main action of the extracts was as a function the inhibition of growth of microorganisms and reducing its population. The extracts showed a peculiar chemical composition. In extracts of broccoli stalks and peel pumpkin were found some phenolic acids and organic, while the extract in papaya seed found the single compound with antimicrobial potential was benzyl-isothiocyanate. Given the difficulties in preventing food contamination by L. monocytogenes, the use of natural antimicrobial compounds derived from agroindustrial residues shows promise and can be an alternative to aid in safety of food.

show abstract

Phenolic acid contents of kale (Brassica oleraceae L. var. acephala DC.) extracts and their antioxidant and antibacterial activities

Cited by 161 publications

References 25 publications

Effect of pasteurization temperature on quality of aonla juice during storage

Effect of pasteurization temperature on quality of aonla juice during storage

Longitudinal data assessment of global stability index in kale leaves

Potencial antimicrobiano de resíduos agroindustriais sobre Listeria monocytogenes

Contact Info

Product

Resources

About