Effect of fermentation by Bacillus subtilis natto on phenolic contents, composition and antioxidant activities of four types of common bean (Phaseolus vulgaris L.)

dc.contributor.advisorMine, Yoshinori
dc.contributor.advisorCao, Rong
dc.contributor.authorHuang, Chia-Liang
dc.date.accessioned2023-01-10T14:48:20Z
dc.date.available2023-01-10T14:48:20Z
dc.date.copyright2023
dc.date.created2022-10-24
dc.degree.departmentDepartment of Food Scienceen_US
dc.degree.grantorUniversity of Guelphen
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeFood Scienceen_US
dc.description.abstractIn this study, four common beans (Phaseolus vulgaris L.), navy, black, pinto, and small red beans were processed to common bean natto. Four types of common beans fermented with Bacillus subtilis natto were investigated for phenolic composition and antioxidant activity. There was a significant increase in TPC in navy beans and pinto beans after fermentation with B. subtilis natto (p < 0.05). Prolonged fermentation of up to three days did not increase the FRAP and DPPH values of common beans compared to cooked beans. However, ORAC values for black beans and pinto beans started to increase after fermentation for two days, and all four common beans showed increased ORAC values after 3 days of fermentation. The phenolic acid profiles of these common beans were altered after fermentation with B. subtilis natto, such as certain phenolic acids and anthocyanins have either increased or decreased, ex. Caffeic acid derivative of navy beans increased significantly from 68.99 μg/g bean to 83.91 μg/g bean after 3-days fermentation. These findings demonstrate that fermented common beans have higher phenolic content and antioxidant activities, potentially developing into novel bean-based products and promoting health.en_US
dc.identifier.urihttps://hdl.handle.net/10214/27398
dc.language.isoenen_US
dc.publisherUniversity of Guelphen
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectPhaseolus vulgaris Len_US
dc.subjectBacillus subtilis nattoen_US
dc.subjectPhenolicen_US
dc.subjectCommon beansen_US
dc.subjectFermentationen_US
dc.subjectAntioxidant activityen_US
dc.subjectPhenolic aciden_US
dc.subjectAnthocyaninsen_US
dc.subjectNavy beansen_US
dc.subjectBlack beansen_US
dc.subjectPinto beansen_US
dc.subjectSmall red beansen_US
dc.subjectNattoen_US
dc.subjectFermented beansen_US
dc.titleEffect of fermentation by Bacillus subtilis natto on phenolic contents, composition and antioxidant activities of four types of common bean (Phaseolus vulgaris L.)en_US
dc.typeThesisen
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