Influence of extraction pre-treatments on some phytochemicals and biological activity of Transylvanian cranberries (Vaccinium vitis-idea L.)

被引：10

作者：

Catunescu, Giorgiana M. ^{[1
]}

Rotar, Ancuta M. ^{[2
]}

Pop, Carmen Rodica ^{[2
]}

Diaconeasa, Zorita ^{[2
]}

Bunghez, Florina ^{[2
]}

Socaciu, Maria-Ioana ^{[2
]}

Semeniuc, Cristina Anamaria ^{[2
]}

机构：

[1] Univ Agr Sci & Vet Med Cluj Napoca, Fac Agr, 3-5 Manastur St, Cluj Napoca 400372, Romania

[2] Univ Agr Sci & Vet Med Cluj Napoca, Fac Food Sci & Technol, 3-5 Manastur St, Cluj Napoca 400372, Romania

来源：

LWT-FOOD SCIENCE AND TECHNOLOGY | 2019年 / 102卷

关键词：

Antibacterial; Antioxidant; Anthocyanins; Flavonoids; Phenols; ANTIOXIDANT CAPACITY; ANTIBACTERIAL ACTIVITY; BIOACTIVE COMPOUNDS; MACROCARPON AIT; ANTHOCYANINS; BLUEBERRIES; JUICE; IDENTIFICATION; PROCYANIDINS; CONCENTRATE;

D O I：

10.1016/j.lwt.2018.12.062

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Cranberries (Vaccinium spp.) are rich sources of phytochemicals, but their bioactivity depends on cultivar, harvesting time, processing, or extraction procedure. Thus, a wider variety of subspecies needs to be characterized, and the effects of treatments prior to consumption or extraction need to be determined. This study aims to phytochemically characterize pre-treated (fresh, frozen, and dried) Transylvanian cranberries (Vaccinium vitis-idea L.) and to evaluate their bioactivity. The profile and content of individual anthocyanins were analyzed by HPLC-PDA, total phenolics and flavonoids were determined spectrophotometrically, and antioxidant activity was evaluated by ABTS(+) radical cation assay. Their antibacterial activity against Staphylococcus aureus, Escherichia coli, and Salmonella Typhimurium was assessed by disk diffusion. Total identified anthocyanins ranged from 11.14 to 123.02 mg cyanidin-3-O-galactoside/100 g fresh weight. Cranberries were rich in polyphenols and flavonoids, with the highest content in fresh berries; they inhibited E. coli and S. Typhimurium. Freezing enhanced their antibacterial activity. The significance of this study lies in the evaluation of how pre-treatments affect some novel natural food-grade antimicrobials from cranberries with the potential to replace synthetic food preservatives and to deliver phytochemicals with health benefits.

引用

页码：385 / 392

页数：8

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