Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effect of Herbal Extracts Supplementation on Ruminal Methane Production and Fermentation Characteristics In vitro

한약재 추출물 첨가가 in vitro 반추위 발효 시 메탄생성 및 발효성상에 미치는 영향

  • Lee, Shin-Ja (Division of Applied Life Science (BK 21 Program), Gyeongsang National University) ;
  • Lee, Sung-Sill (Division of Applied Life Science (BK 21 Program), Gyeongsang National University) ;
  • Moon, Yea-Hwang (Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology)
  • 이신자 (경상대학교 응용생명과학부) ;
  • 이성실 (경상대학교 응용생명과학부) ;
  • 문여황 (경남과학기술대학교 응용생명과학과)
  • Received : 2011.07.25
  • Accepted : 2011.09.06
  • Published : 2011.09.30
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Abstract

This study was conducted to investigate the effects of several herbal extracts (obtusifolia, cinnamon, chinese pepper, licorice root) on the characteristics of rumen fermentation in vitro. Soybean meal was used as a substrate for fermentation in vitro. Herbal extracts were supplemented to media by 10% of the substrate. The substrates supplemented to Dehority artificial media with herbal extracts were fermented in 30ml serum bottles for 0, 3, 6, 9, 12 and 24 hr at $39^{\circ}C$. Cumulative gas production was significantly (p<0.05) greater in the herbal extract supplements than in the control, in the order of licorice root, chinese pepper, cinnamon and obtusifolia. Methane proportions of the herbal extracts were significantly (p<0.05) higher than that of the control. Licorice root extract supplementation resulted in the lowest methane proportion at 3 hr fermentation. Proportion of hydrogen was significantly (p<0.05) higher in the herbal extract supplements than in the control at 12 hr fermentation. Compared to the control, ammonia concentration in the licorice root was significantly higher at 3 hr fermentation, but lower at 12 hr fermentation (p<0.05). Based on these results, supplementation of the herbal extracts used in this experiment resulted in increased cumulative gas production and stimulating methane production in vitro rumen fermentation.

본 연구는 반추동물에 있어서 결명자, 계피, 산초 및 감초 등의 한약재 추출물의 첨가가 메탄생성에 미치는 영향을 구명하고자 수행되었다. In vitro 반추위 발효기질로는 대두박을 사용하였으며, 한약재 추출물 첨가수준은 기질의 10%로 하여 시간대별(0, 3, 6, 9, 12, 24 hr)로 $39^{\circ}C$에서 발효시켰다. In vitro 반추위 배양액의 pH는 6.46~6.89 수준으로서 시간이 경과함에 따라 감소하는 경향이었다. 총 가스발생량은 감초, 산초, 계피, 결명자 처리구 순으로 감초 추출물 첨가구에서 가장 많았으며, 모든 한약재 추출물 첨가구가 대조구에 비해 유의적(p<0.05)으로 많았다. 메탄생성 비율은 3시간 발효 시, 감초 추출물 처리구가 타 처리구에 비해 낮았으나 시간이 경과함에 따라 비율이 오히려 높아졌으며, 한약재 추출물 첨가구가 대조구에 비해 유의적으로 높았다(p<0.05). 수소가스의 생성비율은 6시간 발효 시까지는 처리구간에 차이가 없었으나 12시간 발효 시에는 한약재 추출물 첨가구가 대조구에 비해 유의적(p<0.05)으로 높게 나타났다. 암모니아 생성량은 발효 3시간대에는 산초 추출물 첨가구와 감초추출물 첨가구가 대조구에 비해 높았으나, 발효 12시간대에는 감초 추출물 첨가구가 대조구에 비해 유의적으로 낮았다(p<0.05). 이상의 결과에서 본 시험에 사용된 한약재 추출물은 가스 생성량을 비롯한 메탄 생성량을 증가시키고, 메탄 발효를 촉진시키는 것으로 나타났다.

Keywords

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