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KMID : 1134820210500090936
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Journal of the Korean Society of Food Science and Nutrition
2021 Volume.50 No. 9 p.936 ~ p.942
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Comparison of Functional Components and Physiological Activities in Peanut Hull Extracts by Cultivars and Extraction Solvent
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Kim Hyun-Joo
Kim Min-Young
Lee Byong-Won
Kim Mi-Hyang
Lee Yu-Young
Lee Jin-Young
Kang Moon-Seok
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Abstract
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This study was performed to investigate the functional components and physiological activities of peanut hull extracts (PHEs) from two different cultivars (Arachis hypogaea L. cv. Sinpalkwang and cv. K-Ol) according to extraction methods. PHEs were extracted using 100% acetone, 50% methanol, and 100% methanol. Extraction using 50% methanol resulted in higher yields from both cultivars compared to other extraction solvents 16.43% (Sinpalkwang) and 12.71% (K-Ol). The highest luteolin content (0.65∼1.70 mg/g dry weight) and the highest eriodictyol content (0.27∼1.23 mg/g dry weight) were observed using 100% methanol extract from Sinpalkwang cultivar. ABTS radical scavenging activity showed its highest value in 50% methanol extract, whereas DPPH radical scavenging activity and FRAP value showed the highest value in 100% methanol extract. The 50% methanol extract of Sinpalkwang cultivar showed α-glucosidase inhibition activity (IC50: 0.74 mg/mL), whereas the 100% acetone extract of Sinpalkwang cultivar showed the most effective angiotensin converting enzyme (ACE) inhibitory activity (IC50: 7.97 mg/mL). Moreover, the 50% methanol extract of K-Ol cultivar showed the most effective anti-tyrosinase activity (IC50: 12.94 mg/mL), whereas the 100% acetone extract of K-Ol cultivar was most effective at inhibiting xanthine oxidase (IC50: 3.11 mg/mL). These results suggest that PHE possesses physiological activity and provides valuable information and evidence for the use of peanut byproduct as a functional food and cosmetic material.
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KEYWORD
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peanut hull, cultivar, extraction solvent, functional components, physiological activity
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