Abstract

Pineapple flesh and core were added during fermentation to develop a new style of fruit makgeolli. Physicochemical characteristics were measured during fermentation, and sensory evaluation was performed after fermentation to estimate the quality of pineapple makgeolli. No significant differences were observed for pH, $^{\circ}Bx$, and alcohol contents between makgeolli with and without pineapple after fermentation. Total acidity of the pineapple makgeolli increased due to considerable elevation of citric acid, tartaric acid, malic acid, and pyroglutamic acid contents as well as slight elevation of lactic acid and propionic acid contents. On the other hand, the total amino acid contents of pineapple makgeolli were lower than those of control. The sensory preferences for pineapple makgeolli were higher overall than those for control, which can be attributed to the preferences for fruit flavor and sour taste in pineapple makgeolli.

파인애플 과육과 심지를 첨가하여 막걸리를 제조하고 품질특성을 분석하였다. 발효기간 동안 pH, $^{\circ}Bx$의 측정값과 발효 후 알코올의 함량은 샘플들 간에 큰 차이를 보이지 않았다. 파인애플을 첨가한 막걸리의 총산도 값은 대조구에 비해 높았으며 특히 citric acid, tartaric acid, malic acid, pyroglutamic acid, lactic acid, propionic acid의 함량이 높았다. 반면 총 유리아미노산의 함량은 대조구에서 더 높았으며, methionine을 제외한 aspartic acid, serine, threonine, alanine, tryptophan, lysine 등의 유리아미노산 함량은 파인애플을 첨가하지 않은 막걸리에서 더 높게 측정되었다. 관능평가에서는 파인애플 막걸리가 대조구보다 색도를 제외하고 향, 맛, 전체적인 기호도에서 높은 값을 보였다.

Keywords

• pineapple;
• makgeolli;
• organic acid;
• amino acid;
• fermentation