Characterization of pomegranate juice and whey based novel beverage fermented by kefir grains

Mixture of pomegranate juice and whey was evaluated as a potential substrate for production of a novel probiotic beverage by kefir grains. Different fermentation conditions were used as viz: two fermentation temperature (19 ºC and 25 ºC) and two levels of kefir grains inoculum (5 % and 8%w/v). pH, a...

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Veröffentlicht in:Journal of food science and technology 2015-06, Vol.52 (6), p.3711-3718
Hauptverfasser: Sabokbar, Nayereh, Khodaiyan, Faramarz
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Khodaiyan, Faramarz
description Mixture of pomegranate juice and whey was evaluated as a potential substrate for production of a novel probiotic beverage by kefir grains. Different fermentation conditions were used as viz: two fermentation temperature (19 ºC and 25 ºC) and two levels of kefir grains inoculum (5 % and 8%w/v). pH, acidity, lactose consumption as well as organic acids formation were determined during 32 hours of fermentation. Results showed that kefir grains were able to utilize lactose and decrease pH, increase acidity, produce lactic acid and acetic acid, while the level of citric acid decreased. It was observed these change depended on temperature and level of kefir grains with the highest changes at the temperature of 25 ºC and kefir grains inoculum of 8%w/v. Pomegranate juice and whey mixture therefore may serve as a suitable substrate for the production of novel probiotic dairy-fruit juice beverage by kefir grains and the sensory characteristics of this beverage were shown desirable results.
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subjects Acetic acid
Acidity
Analysis
Antioxidants
Bacteria
Beverages
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Fermentation
Food Science
Fruit juices
Functional foods & nutraceuticals
Grain
Lactose
Microorganisms
Milk
Nutrition
Organic acids
Original
Original Article
Probiotics
Proteins
Statistical analysis
Studies
Sulfuric acid
Temperature
title Characterization of pomegranate juice and whey based novel beverage fermented by kefir grains
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