Effects of Xylitol and Grapefruit Seed Extract on Sensory Value and Fermentation of Baechu Kimchi

자일리톨과 자몽씨추출물이 배추김치의 관능성과 발효숙성에 미치는 영향

  • Moon, Sung-Won (Department of Food and Nutrition, Seoul National University, Department of Food Service and Preparation, Youngdong University) ;
  • Shin, Hyun-Kyung (Department of Food and Nutrition, Hallym University) ;
  • Gi, Geun-Eog (Department of Food and Nutrition, Seoul National University, Research Center, Bifido Co.)
  • 문성원 (서울대학교 식품영양학과, 영동대학교 호텔외식조리학과) ;
  • 신현경 (한림대학교 식품영양학과) ;
  • 지근억 (서울대학교 식품영양학과, (주)비피도)
  • Published : 2003.04.01

Abstract

Application of xylitol (Xyl) and grapefruit seed extract (GSE) to improve the quality and preservation of baechu kimchi was attempted. Xylitol and grapefruit seed extract at various combinatory concentrations were added into baechu kimchi and fermented for 25 days at $10^{\circ}C$. Assay was performed on sensory value, acidity, and bacterial growth. Addition of 0.1% GSE and 2% Xyl showed the highest score in the overall acceptability, sour taste, and texture. Score of intensity characteristics in smell and sour taste were the highest in the control and that of texture the highest in 0.1% GSE plus 2% Xyl treatment. The pH decreased, and titratable acidity, and growth of total viable cells and lactic acid bacteria were remarkably retarded in 0.1% GSE plus 2% Xyl group compared to the control. Results showed that application of 2% Xyl plus 0.1% GSE to the kimchi fermentation enhanced sensory value of the fermented product and extended the storage period by about twofold.

발효 김치의 보존성과 품질 향상을 위하여 천연의 항 미생물활성물질인 자일리톨(Xyl)과 자몽씨추출물(GSE) 첨가 효과를 조사하였다. 자일리톨 첨가량은 0, 1, 2%(w/w)와 자몽씨추출물 0.1%(w/w)로 하여 6가지 실험처리구(Control, A; 1% Xyl, B; 2% Xyl, C; 0.1% GSE, D; 0.1% GSE+1% Xyl, E; 0.1% GSE+2% Xyl)로 $10^{\circ}C$에서 25일동안 발효시키면서 관능적, 이화학적 및 미생물학적 특성을 보았다. 관능평가 결과 기호특성에서 조직감, 신맛, 전반적인 기호도에서 자몽씨추출물 0.1%에 2% 자일리톨을 혼합한 처리구 E가 높은 점수를 받았고, 강도특성에서 냄새와 신맛은 대조구가 높은 점수를 받았고, 조직감은 자몽씨추출물과 자일리톨 2%가 혼합된 처리구 E가 높은 점수를 받았다. pH는 점차로 낮아졌는데, 대조구가 가장 낮은 pH를 보였고, 처리구 E가 발효말기까지 높은 pH를 나타냈다. 전체 발효기간 동안 적정산도, 총균수와 젖산균수는 대조구에 비해서 자몽씨추출물 0.1%와 자일리톨 2%을 함유하는 처리구 E에서 현저히 적었다. 연구결과 자몽씨추출물 0.1%에 자일리톨 2%가 첨가된 처리구 E가 발효숙성을 조절하여 맛과 조직감을 향상시키고, 가식기간을 약 2배정도 연장시키는 것으로 나타났다.

Keywords

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