Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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The physicochemical characteristics and antioxidant capacities of commercial tea products from Phellinus baumii, Ganoderma lucidum

상황버섯과 영지버섯 차류 제품의 이화학적 특성 및 항산화능

  • Kim, Ha-Na (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Son, Eun Ji (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Chung, Shin-Kyo (School of Food Science and Biotechnology, Kyungpook National University)
  • Received : 2015.02.02
  • Accepted : 2015.04.10
  • Published : 2017.02.28
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Abstract

This study was conducted to investigate the physicochemical characteristics, antioxidant capacities of Phellinus linteus and Ganoderma lucidum commercial tea products. The physicochemical characteristics included pH, Hunter's color values, soluble solid contents, evaporation residues, and ${\beta}$-glucan contents. The antioxidant capacities were measured by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities, ferric reducing antioxidant power (FRAP), and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activities, total phenolic contents (TPC), and total flavonoid contents (TFC). The pH, soluble solid contents, evaporation residues, and ${\beta}$-glucan contents were in the range of 4.43-7.05, $0.40-0.73^{\circ}Brix$, 62.04-258.84 mg/100 g, and 15.51-62.32 mg%, respectively. Hunter's color values (L, a, and b) indicated 41.76-55.02, -0.49-5.06, and 17.41-28.32, respectively. The antioxidant capacities showed $32.63-367.81{\mu}M$ GAE (DPPH radical scavenging activities), $321.86-1,035.19{\mu}M$ TE (FRAP), $703.50-1,091.83{\mu}M$ (ABTS radical scavenging activities), $286.56-916.00{\mu}M$ (TPC), and $85.33-635.33{\mu}M$ (TFC). Overall, P. linteus liquid tea 2 (PL2) and G. lucidum liquid tea 1 (GL1) showed high antioxidant capacities (p<0.05). The TPC and TFC were highly correlated with DPPH radical scavenging activities, FRAP, and ABTS radical scavenging activities (r=0.7298-0.9743), but the ${\beta}$-glucan contents were not correlated well with antioxidant activities tested (r=0.3146-0.6663).

시판되고 있는 상황버섯과 영지버섯 차류 제품의 이화학적 특성과 ${\beta}$-glucan 함량, 항산화 활성 및 항산화 성분 함량을 조사하고 이들 간의 상관성을 분석하였다. pH는 4.43-7.05의 범위를 보였으며, 상황버섯 액상차2(PL2)와 영지버섯 액상차1(GL1)이 가장 낮은 값을 보였다(p<0.05). Hunter 색차계로 측정한 결과 L 값은 41.76-55.02, a 및 b 값은 -0.49-5.06, 17.41-28.32의 범위를 보였다. 가용성 고형분 함량은 $0.40-0.73^{\circ}Brix$의 범위를 보였으며, 증발잔류물은 62.04-258.84 mg/100 g의 범위로 PL2와 GL1이 가장 높은 값을 나타내었다(p<0.05). ${\beta}$-Glucan 함량은 15.51-62.32 mg%의 범위를 나타내었으며, GL1과 PL2가 각각 62.32 mg%, 42.35 mg%로 높은 함량을 나타내었다(p<0.05). DPPH 라디칼 소거 활성에서는 $32.63-367.81{\mu}M$ GAE, FRAP에서는 $321.86-1,035.19{\mu}M$ TE, ABTS 라디칼 소거활성에서는 $703.50-1,091.83{\mu}M$ TE의 범위를 나타내었으며, 총페놀 함량은 $286.56-916.00{\mu}M$ GAE, 총플라보노이드 함량은 $85.33-635.33{\mu}M$ CE의 범위를 보여 전반적으로 PL2와 GL1이 항산화능이 높은 것으로 나타났다(p<0.05). 총페놀 함량과 총플라보노이드 함량은 DPPH 라디칼 소거 활성, FRAP 및 ABTS 라디칼 소거 활성과 모두 높은 상관성(r=0.7298-0.9743)을 보인 반면, ${\beta}$-glucan 함량은 항산화 활성 모두와 비교적 낮은 상관성(r=0.3146-0.6663)을 보였다. 전반적으로 액상차가 침출차에 비해 ${\beta}$-glucan 함량 및 항산화능이 우수하였다.

Keywords

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