Chemical Composition and Anti-Stress Effects of Yeast Hydrolysate
- Authors
- Lee, Hyun-Sun; Jung, Eun Young; Suh, Hyung Joo
- Issue Date
- Dec-2009
- Publisher
- MARY ANN LIEBERT, INC
- Keywords
- Beck Anxiety Inventory; Beck Depression Inventory; brain mapping; stress
- Citation
- JOURNAL OF MEDICINAL FOOD, v.12, no.6, pp.1281 - 1285
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF MEDICINAL FOOD
- Volume
- 12
- Number
- 6
- Start Page
- 1281
- End Page
- 1285
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/118797
- DOI
- 10.1089/jmf.2009.0098
- ISSN
- 1096-620X
- Abstract
- In the present study, the anti-stress effects of yeast hydrolysate (YH) were investigated. The YH consisted of crude carbohydrate (23.6%) and crude protein (68.3%) with low contents of crude ash (3.1%) and crude fat (0.3%). Also, acidic amino acids (glutamic acid+aspartic acid) were present in large quantities (14.2 and 5.0 mol%, respectively). Pronase digestion had little effect on the affinity of the YH on 5-hydroxytryptamine (serotonin) and norepinephrine transporters, whereas NaIO4 oxidation of the hydrolysate decreased the affinity by about 10% at 1,000 mu g/mL, indicating that the periodate-labile carbohydrate moiety played a leading role in the affinity effects of the carbohydrate in YH. As a result of brain mapping after the administration of the YH for 3 days in human subjects, a symmetrical distribution of theta and alpha waves in the central and parietal lobes was observed. This brain mapping pattern of theta and alpha wave distribution appears in a psychologically stable state. The YH groups showed improvements in Beck Depression Inventory and Beck Anxiety Inventory scores after YH administration for 2 weeks. Treatment also seemed to have a more significant (P<.05) impact on the somatic manifestations of anxiety as indexed by the Beck Anxiety Inventory scores. Food materials used as a source of YH have been found to be associated with increases in alertness and adaptation to stress.
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Collections - College of Health Sciences > School of Biosystems and Biomedical Sciences > 1. Journal Articles
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