오디 착즙액을 이용한 와인발효 특성

Characteristics of Wine Fermented from Mulberry Juice

  • 김강일 (대구한의대학교 한방식품조리영양학부) ;
  • 김미림 (대구한의대학교 한방식품조리영양학부)
  • Kim, Kang-Il (Department of Faculty of Herbal Cuisine and Nutrition, Daegu Hanny University) ;
  • Kim, Mi-Lim (Department of Faculty of Herbal Cuisine and Nutrition, Daegu Hanny University)
  • 투고 : 2010.06.16
  • 심사 : 2010.07.30
  • 발행 : 2010.08.30

초록

본 연구는 여름철에 집중 생산되는 오디를 이용하여 오디와인을 개발하고자 하였다. 발효 종료시점 오디과즙의 pH는 3.2~3.6, 총산 함량은 0.40~0.53%, 당도는 발효 6일째 $9.5{\sim}14.5^{\circ}brix$로 급격히 감소하였으며 이후에도 지속적으로 감소하여 발효 36일 이후에는 $3^{\circ}brix$ 부근에서 더 이상의 당 소모는 없었다. 알콜 함량은 발효 6일째 급격히 증가하여 $16^{\circ}C$$18^{\circ}C$는 4.5%, $20^{\circ}C$는 6.5%, $25^{\circ}C$는 8.0%로 배양온도가 높을수록 증가하여 48일째 10.5~11.5%로 측정되었다. 오디와인은 citric acid, malic acid, oxalic acid가 검출되었으며, citric acid와 oxalic acid는 발효 후 감소하였으며, malic acid는 증가하였다. 당의 종류로는 fructose, glucose, maltose, sucrose가 확인되었으며, 오디 발효에서 가장 많이 이용된 당은 glucose와 maltose 이었다. 알콜 생성량이 가장 높은 조건은 $20^{\circ}C$$25^{\circ}C$이었으며, 두 온도간에는 유의적인 차이는 없었다. 전자공여능은 40%(v/v) 농도에서 오디와인은 90% 이상의 높은 활성을 나타내었다. SOD 유사활성은 100%(v/v) 농도에서 오디과즙, 오디와인이 각각 80.1% 및 72.1%이었다. 아질산염 소거능은 100%(v/v) 농도에서 오디과즙과 오디와인은 각각 86.2%, 85.2%의 소거능을 보였다. 오디와인 보다 오디과즙이 더 높은 활성을 나타내었으며, 발효 후에 기능성이 증가하지는 않았지만 비슷한 수준으로 유지됨을 볼 수 있었다. 관능평가에서 전체적인 밸런스는 오디와인이 5.00로 보통 이상으로 평가되어 오디를 이용한 발효주의 산업 가능성을 확인할 수 있었다.

We sought to ferment wine from mulberry (Morus alba) juice. The soluble solid content was $9.5{\sim}14.5^{\circ}brix$ on day 6 of fermentation, and gradually fell later; sugar was not further consumed when $3^{\circ}brix$ was attained. Alcohol content rose dramatically on day 6 of fermentation, being 4.5% (v/v) at fermentation temperatures of 16C and 18C, 6.5% (v/v) at 20C, and 8.0% (v/v) at 25C, rising further to 10.5~11.5% (v/v) on day 48, at higher culture temperatures. Citric acid, malic acid, and oxalic acid were present in mulberries. The levels of both citric and oxalic acid fell after fermentation, whereas malic acid concentration increased. All of fructose, glucose, maltose, and sucrose were fermented. Electron-donating ability (EDA) was elevated to over 90% of the control value in mulberry juice diluted to 40% (v/v). SOD-like activities in juice and wine were 80.1% and 72.1% of the control value. Nitrite-scavenging abilities (NSAs) were 86.2% and 85.2% of control in undiluted juice and wine, respectively. Mulberry juice had an activation level higher than that of mulberry wine, but functionality neither rose nor fell after fermentation. Insensory evaluation, the overall wine score was better than average, at 5.00, demonstrating the commercial potential of mulberry wine.

키워드

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