Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Effect of Far-infrared Irradiation on the Antioxidant Activity of Extracts from Phellinus igniarius and Ganoderma lucidum

원적외선 처리가 상황버섯과 영지버섯 추출물의 항산화능에 미치는 영향

  • Lee, Seung-Cheol (Department of Food Science and Biotechnology, Kyungnam University) ;
  • Ju, Young-Cheoul (Mushroom research Institute, Gyeonggido Agricultural Research and Extension Service) ;
  • Kim, Jeong-Han (Mushroom research Institute, Gyeonggido Agricultural Research and Extension Service)
  • 이승철 (경남대학교 식품생명학과) ;
  • 주영철 (경기도농업기술원 버섯연구소) ;
  • 김정한 (경기도농업기술원 버섯연구소)
  • Published : 2007.08.31
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Abstract

The antioxidant activities of Phellinus igniarius (PI) and Ganoderma lucidum (GL) extracts were evaluated after far-infrared (FIR) irradiation. PI and GL were irradiated at $120^{\circ}C$ for 30, 60, 90 and 120 min with a FIR heater (2-14 ${\mu}m$), and then extracted by distilled water for 1 hr. Total sugar contents (TSC), total phenolic contents (TPC), radical scavenging ability (RSA), and reducing power (RP) were significantly increased by FIR irradiation. When PI was irradiated for 120 min, the TSC, TPC, RSA, and RP values of the PI extracts increased from 10.1 to 25.9 mg/g, 6.1 to 13.4 mg/g, 23.8 to 51.5%, and 0.222 to 0.363, respectively, compared to the untreated controls. The GL extracts, under the same conditions ($120^{\circ}C$ for 120 min), also increased in TSC, TPC, RSA, and RP from 11.1 to 22.6 mg/g, 2.5 to 5.8 mg/g, 14.5 to 18.6%, and 0.271 to 0.296, respectively. These results indicate that appropriate FIR irradiation of PI and GL could enhance the antioxidant activities of their extracts by increasing amounts of phenolic and sugar compounds.

원적외선 조사가 상황버섯과 영지버섯의 항산화능에 미치는 영향을 조사하기 위하여 30, 60, 90 그리고 120분 간격으로 원적외선을 조사를 한 후, 물 추출물을 제조하여 실험에 이용하였다. 상황버섯 추출물은 원적외선 처리시간에 비례하여 갈변도, 총당, 총페놀, 라디컬소거능 및 환원력이 증가하였으며, 120분 처리 후 갈변도는 2.1 배, 총당은 2.6배, 총페놀은 2.2배 , 라디컬 소거능은 2.2배, 환원력은 1.6 배 증가하였다. 또한, 원적외선 120분 조사에 의해 영지버섯 추출물의 갈변도, 총당, 총페놀 및 라디컬소거능도 각각 1.7배, 2.0배, 2.3배, 1.3배 증가하였다. 그러나 환원력은 유의적인 차이를 보이지 않았으며, 전체적인 효과는 상황버섯에 비해 다소 낮았다. 이상의 결과 원적외선 조사가 상황버섯과 영지 버섯의 당류 및 페놀화합물의 추출을 촉진하여 항산화능을 향상시킴을 확인하였다.

Keywords

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