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여수환,이수정,김순희,김소영 한국식품저장유통학회 2019 한국식품저장유통학회지 Vol.26 No.7
In this study was we investigated the optimum conditions for the fermentation of Kujippong (Cudrania tricuspidata) vinegar by various acetic acid bacteria (Acetobacter pasteurianus A26, A37, B7) and its quality characteristics. Fermentation at various initial acidities (pH 2, 3, and 4) and temperatures (20℃, 30℃, and 35℃) revealed that A. pasteurianus A37 and B7 produced the most acetic acid when fermented at pH 4 and 20℃. The acidities of the Kujippong fermented vinegars prepared with the A37 and B7 strains increased by 6.3% and 6.1%, to pH 2.45 and pH 2.43, respectively. Meanwhile, the vinegar produced by the A26 strain showed low acidity under all conditions. At the end of fermentation period, the acetic acid content of the main organic acid had increased by a factor of ten from day 0, to values of 37.34 mg/mL for A. pasteurianus A37 and 39.34 mg/mL for B7. The A37 and B7 strains produced 37.5% and 59.2% volatile components, respectively, which were mainly acetic acid and its ethyl ester, among a relatively diverse range of volatile compounds produced. Therefore, the good aceitc acid production of farm-made Kujippong-fermented vinegar is expected to promote the consumption of local agricultural products and and increase in farm income.
초등학교 교실 대상 축소모형의 목재 적용 비율에 따른 휘발성유기화합물 배출평가
여수환,박진영,박해든,장성진 한국생활환경학회 2023 한국생활환경학회지 Vol.30 No.1
Climate change caused by global warming is becoming severe worldwide, and interest in carbon emissions is increasing. Conventions and regulations between countries have been strengthened to reduce carbon emissions, and goals for carbon neutrality have been set to solve the problem of global warming. Wood-based materials are one of the building materials and are a building material with an excellent carbon storage effect. In addition, as an eco-friendly material, if applied to indoor remodeling, it will be possible to improve the indoor environment. Therefore, in this study, indoor air quality was analyzed according to the ratio of the application of the wood-based material when remodeling indoor wood. First, after making a scale model, the Volatile Organic Compounds(VOC) change was evaluated when the wood of each species was applied. As a result, monoterpene showed a large amount of emission from larch, and sesquiterpene showed a large amount of emission from cypress.