Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Physiological Activity of Ethanol Extract from the Different Plant Parts of Loquat (Eriobotrya japonica Lindl.)

비파 부위별 에탄올 추출물의 생리활성

Park, Yong-Seo;Park, Yun-Jum;Kim, Hyun-Ju;Im, Myeong-Hee;Lee, Mi-Kyung;Kim, Young-Min;Cho, Ja-Yong;Heo, Buk-Gu
박용서;박윤점;김현주;임명희;이미경;김영민;조자용;허북구

  • Published : 20080300
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Abstract

This study was conducted to promote the consumption and to improve the values of the loquat (Eriobotrya japonica Lindl., cv. “Jeonjung”). We also harvested loquat grown in Wando-gun, Jeonnam Province, on June 10, 2007, and examined its physiological activities with the ethanol extracts from different plant parts. Total phenol content was high in the order of leaves (60.6 μgmL-1), seeds (22.9 μgmL-1) and fruits (19.4 μgmL-1). When the concentration of extracts was 500 mgmL-1, leaves showed highest DPPH (α,α-diphenyl-β-picryl-hydrazyl) radical scavenging activity (91.8%) and followed by seeds (25.0%) and fruits (14.2%). And nitrite scavenging activity was high in the order of leaves (73.0%), fruits (66.9%) and seeds (64.9%). Fruit extracts showed highest mushroom tyrosinase inhibition activity, especially the activity at 4,000 mgmL-1 extracts was 33.3%. The highest anti-microbial activity exhibited in the leaf extracts, especially showing the largest inhibition diameter (12.14 mm) against Streptococcus mutans at 500 mgmL-1 extracts.

비파의 소비촉진 및 부가가치를 향상시키기 위하여 2007년 6월 전남 완도군에서 재배중인 비파 ‘전중(田中)’을 수확하여 부위별(잎, 과육 및 씨) 에탄올 추출물의 생리활성 효과를 조사하였다. 총 페놀함량은 잎(60.6μgmL-1), 종자(22.9μgmL-1) 그리고 과육(19.4μgmL-1) 순으로 많았다. 추출물의 농도가 500mgmL-1일 때 부위별 전자공여능은 잎 추출물(91.8%), 종자 추출물(25.0%), 과육 추출물(14.2%) 순이었다. 아질산염 소거는 추출물의 농도가 500mgmL-1일 때 잎추출물은 73.0%, 과육추출물은 66.9%, 종자 추출물은 64.9%를 나타내었다. Tyrosinase 활성 저해 효과는 과육, 잎, 종자 추출물 순으로 높게 나타났는데, 과육 추출물 1,000mgmL-1에서는 16.9%, 4,000mgmL-1에서는 33.3%의 저해율을 나타내었다. 항균활성은 잎 추출물에서 높게 나타났는데, 그 중 Streptococcus mutans 균에서 저해환의 직경이 12.1(500mgmL-1)∼15.4mm(2,000mgmL-1)으로 크게 나타났다.

Keywords

References

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