Fortification of γ-aminobutyric acid and bioactive compounds in Cucurbita moschata by novel two-step fermentation using Bacillus subtilis and Lactobacillus plantarum
Pumpkin (Cucurbita moschata) was co-fermented using Bacillus subtilis HA and Lactobacillus plantarum EJ2014 for producing a novel food ingredient fortified with γ-aminobutyric acid (GABA) and bioactive compounds. After the first fermentation, the broth showed pH 6.1, 0.26% acidity, 8.9 log CFU/mL vi...
Saved in:
Published in | Food science & technology Vol. 102; pp. 22 - 29 |
---|---|
Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.03.2019
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Pumpkin (Cucurbita moschata) was co-fermented using Bacillus subtilis HA and Lactobacillus plantarum EJ2014 for producing a novel food ingredient fortified with γ-aminobutyric acid (GABA) and bioactive compounds. After the first fermentation, the broth showed pH 6.1, 0.26% acidity, 8.9 log CFU/mL viable cell counts of B. subtilis, 2.61% mucilage, and a consistency index of 5.43 Pa·sn. After the second fermentation, the broth indicated pH 5.1 and 0.23% acidity. The viable cell counts of B. subtilis decreased to 7.7 log CFU/mL, while L. plantarum counts increased from 7.4 log CFU/mL to 9.1 log CFU/mL by the end of the co-fermentation. The final mucilage content was 0.58% and consistency index was 0.15 Pa·sn. The co-fermented pumpkin contained 1.47% GABA, indicating that the MSG precursor was successfully utilized by the stepwise fermentation. Therefore, the co-fermented pumpkin paste could potentially be used as a novel ingredient for the food industry.
•A fermented pumpkin-based functional ingredient was produced.•Two bacterial strains were used for the co-fermentation.•The co-fermented product was fortified with GABA, γ-PGA, and probiotics. |
---|---|
ISSN: | 0023-6438 1096-1127 |
DOI: | 10.1016/j.lwt.2018.07.065 |