Screening of Fungal Nuruk and Yeast for Brewing of Gugija-Liriope tuber Traditional Rice Wine and Optimal Fermentation Condition

The purpose of this study was to examine the physicochemical properties and antioxidant activities of aged black Liriope platyphylla (ALP) and raw Liriope platyphylla (RLP). RLP was aged for 14 days at high humidity (90% and 95%) and temperatures (50℃ and 80℃). With the passage of the storage period, the moisture content significantly decreased to 64.26%. During storage, the sugar content increased to 16.00 °Brix, while the reducing sugar content increased to 2.62%. With increasing storage time, the pH decreased to 3.63, while the acidity increased to 0.032%. In the Hunter color system, L (lightness) and b (yellowness) values of ALP were lower than those of RLP, while the redness value of ALP was higher than that of RLP. During storage, the browning index value significantly increased to 77.08. The increase in total phenol content of ALP after 14 days of aging was more than that of RLP. IC 50 values for both 1,1-diphenyl-2-picrylhydrazyl (DPPH) and hydroxyl radical scavenging activities of ALP after 14 days of aging were lower than those of RLP. Based on these results, it is suggested that aged black Liriope platyphyllas can a useful food material, in terms of both physicochemical properties and antioxidant activities. Key words：Liriope platyphylla, aged black Liriope platyphylla, quality characteristics, antioxidant activities

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Study of Quality Control of Traditional Wine Using IT Sensing Technology

Song¹,

Choi²,

Park³

et al. 2015

Journal of the Korean Society of Food Science and Nutrition

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The objective of this study was to investigate the quality characteristics of traditional wine using an radio-frequency identification (RFID) system annexed to a fermenter. In this study, we proposed an RFID-based data transmission scheme for monitoring fermentation of traditional alcoholic beverages. The pH, total acidity, total sugar, soluble sugar, free sugar, alcohol content, and organic acids of were investigated and subjected to fermentation of traditional alcoholic beverages three times. The pH ranged from 7.98, 7.95, and 7.68 at day 0, decreased drastically to 3.31∼2.96 at day 2, and then slowly increased to the end point, finally reaching 3.34 at day 20. Acidity tended to increase quickly with time, especially for all samples after day 2. The fermentation environment induced a sudden increase acidity in reactants and indicated a low pH. The total sugars during fermentation quickly decreased to the range of 20.3, 22.43, and 19.2% at day 2, and the slope of reduction steadily decreased to 5.1, 6.1, and 4.8% at day 10. On the other hand, the alcohol content showed the reverse trend as total sugars. The alcohol content also showed the same pattern as total acids, showing the highest alcohol content of 17.3% (v/v) on day 20. In this study on traditional wine fermentation using an RFID system, we showed that pH, soluble sugar, and alcohol content can be adopted as key indicators for quality control and standardization of traditional wine manufacturing.

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Screening of Fungal Nuruk and Yeast for Brewing of Gugija-Liriope tuber Traditional Rice Wine and Optimal Fermentation Condition

Cited by 11 publications

References 3 publications

Monitoring on Physicochemical Properties of Liriope platyphylla by the Use of Four Dimensional Response Surface

Monitoring on Physicochemical Properties of Liriope platyphylla by the Use of Four Dimensional Response Surface

Quality characteristics and antioxidant activities of aged black Liriope platyphylla

Study of Quality Control of Traditional Wine Using IT Sensing Technology

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