Journal
PROCESS BIOCHEMISTRY
Volume 59, Issue -, Pages 141-149Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.procbio.2017.05.019
Keywords
Antioxidant activity; Lactic acid bacteria; Phenolics; Vitamin C; Fruit juice fermentation; Flavor compounds
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Funding
- Royal Golden Jubilee PhD Program of Thailand [PHD/0186/2553]
- National Research University Project of Thailand
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Select lactic acid bacteria (LAB); Lactobacillus plantartuti, L. casei and L. acidophilus were targeted for enhancing bioactives and flavor volatiles of cashew apple juice (CAJ) that is an underutilized byproduct from cashew nut processing in Tropical countries. Results indicated the vitamin C and phenolic metabolites such as condensed tannin can be increased at certain stages such as at 12 h over the 48 h fermentation period. Whereas antioxidant activity based on DPPH and ABTS radical scavenging activity generally decreased from initial unfermented stage range of (75%-95%) to consistently in the 50% range by 48 h of fermentation and this follows the decrease in viable counts. The fermentation process increased the condensed tannin contents in CAJ whereas hydrolysable tannins decreased. In this study the changes in flavor volatile types were also analyzed over the course of CAJ fermentation. The results indicated that LAB changed the flavor profiles of fermented CAJ and overall the fruity odor decreased, but the whiskey and acid odor increased. These results provide the foundation to further target the functional benefits of LAB-induced fermented CAJ for further human, animal, and plant health applications.
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