• 식품문화 한맛한얼
• /
• v.1 no.2
• /
• pp.5-10
• /
• 2008

우리나라를 대표하는 전통 발효식품 김치는 언제, 누가 만들게 되었을까? 원시 농경시대에 들어서서 농작물 재배가 어려운 겨울을 보내야 하는 지역에서는 겨울을 나기 위해 각종 식품 재료들을 저장하지 않으면 안 되었는데 아마도 여러 저장 방법 중 소금에 절이는 염장법을 주로 이용하였을 것이다. 채소류를 염장하여 저장하는 동안 젖산균의 발효작용에 의해서 젖산을 비롯한 각종 유기산이 생성되어 상큼한 맛이 나고 저장성이 증진된다는 것을 알게 되어 이러한 기술로 김치를 만든 것을 계승 발전시킨 것이 오늘날의 김치류이다.

• Proceedings of the Membrane Society of Korea Conference
• /
• 2003.05a
• /
• pp.137-140
• /
• 2003

• 건강소식
• /
• v.37 no.5
• /
• pp.36-39
• /
• 2013

보리, 조, 콩, 기장뿐만 아니라 옥수수, 감자, 고구마, 율무, 녹두, 팥, 심지어는 대추, 밤까지 포함되는 잡곡. 다양한 맛과 식감뿐만 아니라 좋은 영양소까지 우리에게 전달하는 잡곡은 흔히 알고 있는 종류에 발효한 잡곡까지 더해져 건강을 선물한다.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
• /
• 2002.05a
• /
• pp.166-166
• /
• 2002

• Food preservation and processing industry
• /
• v.14 no.1
• /
• pp.16-30
• /
• 2015

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.25 no.4
• /
• pp.297-306
• /
• 2005

This study was conducted to compare and evaluate fermentable and nutritional characteristics of brewery meal-based fermented feedstuffs supplemented with Aspergillus oryzae (AO) and Saccharomyces cerevisiae (SC). Experiments were divided into three treatment groups; fermented feedstuff supplemented with $1\%$ of AO(FFAO), fermented feedstuff supplemented with $1\%$ of SC(FFSC), and fermented feedstuff supplemented with $0.5\%$ of AO and $0.5\%$ of SC(FFAS). For changes of crude protein contents by 48 h fermentation, there were no significant differences among treatments. Ether extract(EE) contents were significantly increased by 48 h fermentation (p<0.05). Neutral detergent fiber(NDF) contents of FFAO, FFSC and FFAS were significantly decreased by 48 h fermentation(p<0.05), but acid detergent fiber(ADF) and acid detergent lignin (ADL) contents were not different. The pH of FFAO and FFAS was decreased more rapidly than that of FFSC(p<0.05), reaching a plateau after 24 h. Alcohol content was increased rapidly until 18 h in FFAO and was increased rapidly until 12 h in FFSC and FFAS, and alcohol content of FFAO, FFSC and FFAS was maintained constantly after 24 h. The ammonia N content of FFAO, FFSC and FFAS was 0.022, 0.073 and $0.040\%$ at 48 h, respectively, and then ammonia N was over twice higher in FFSC than in FFAO and FFAS(p<0.05). Dextrose content was increased until 6 h in FFAO but was rapidly decreased in FFSC and FFAS until 6 h(p<0.05). Lactate content was higher in FFAO and FFAS than in FFSC(p<0.05). Consequently, when we added AO in formulation of fermented feedstuff with brewery meal which moisture content was high, EE, alcohol, and lactate contents were increased, but NDF and ammonia N contents were reduced. Therefore, it is expected that AO will be effective to increase the feed value and the preservation of fermented feedstuff with a high moisture content.

• Microbiology and Biotechnology Letters
• /
• v.9 no.4
• /
• pp.219-223
• /
• 1981

Experiments on methane gas digestion were conducted to prevent livestock pollution and develop substitute energy. When about 30(w/w)% of sludge was added to cow feces, pig feces, and poultry feces and digested at 37$^{\circ}C$ for 20 days, methane gas produced per Kg of organic matter for cow feces, pig feces, poultry feces was 131, 248 and 235 l, respectively. pH decreased slightly at first but increased gradually afterwards during digestion period. When 20, 30, and 40(w/w)% of sludge were added to the mixture of cow feces (300g) and water (200g), the volumes of gas produced were 6.1, 14.5 and 13.4 l, respectively. Volume of methane gas produced from the mixture of cow feces and saw dust was much more than that from the mixture of cow feces and rice polishings. The contents of N, K, P for digestion residues were sufficient to be utilized as a fertilizer. When methane gas digestion was carried out with cow feces in a submersible pump digester the volume of methane gas produced per Kg of organic matter was 188 l. The price of total methane gas produced at this digestion was similar to that of the electric power consumed.

• Korean Journal of Food Science and Technology
• /
• v.53 no.6
• /
• pp.761-767
• /
• 2021

Strawberries fermented with Acetobacter pasteurianus SRCM60009 were prepared, and the quality characteristics and physiological activity were measured. As the fermentation period increased, viable cell counts increased, pH decreased, and total acidity increased from 1.09% to 4.20%. The organic acid content of strawberry through acetic acid fermentation was confirmed in the following order: acetic acid, succinic acid, citric acid, and lactic acid. Measurement of α-glucosidase and pancreatic lipase inhibitory activities and angiotensin converting enzyme inhibitory activity showed significantly increased physiological activity owing to fermentation. The use of strawberry vinegar as a functional material was confirmed by measuring the anti-diabetic, anti-obesity, and anti-hypertensive physiological activities through acetic acid fermentation of strawberry. Thus, fermented strawberry vinegar can be used as a functional material in vinegar and other foods.

• Korean Journal of Food Science and Technology
• /
• v.51 no.3
• /
• pp.286-294
• /
• 2019

The purpose of this study was to investigate the possibility of enhancing the functional compounds in apple and pear pomace (APP) by fermentation with mycelia from the mushroom Lentinula edodes. A 30% (w/v) APP with added rice bran and Biji was fermented with L. edodes at $24^{\circ}C$ and 80% humidity. The cellulase and pectinase activities in the fermented APP (FAPP) were higher than those in the non-fermented control. In addition, the physiological activities of the FAPP, including DPPH, ABTS radical scavenging, and SOD-like activity, as well as the total polyphenol and ${\beta}-glucan$ contents were higher than those in the control. FAPP treatment significantly reduced LPS-induced nitric oxide (NO) levels in Raw 264.7 cell. Therefore, FAPP treatment was considered to more effectively suppress cell injury caused by inflammatory cytokines through inhibition of LPS-induced NO production. These results suggest that the levels of functional components in APP can be increased by fermentation with this mushroom mycelium. However, further studies are needed before it can be used as a functional material.

• KSBB Journal
• /
• v.4 no.1
• /
• pp.11-14
• /
• 1989

A study on the continuous fermentation with cell recycle by a tower fermentor to produce ethanol has been carried out. ethanol fermentation was conducted with flocculating yeast strain, Saccharomyces cerevisiae TS4, to compare the ethanol productivity with conventional continuous process. Employing a 15% glucose feed, a cell density of 50 g/l was obtaind. The ethanol productivity of the cell recycle system was found to be 26.5g EtOH/1-hr, which was nearly 7.5 times higher than the conventional continuous process without cell recycle. A cell recycle ratio of 7 to 8 resulted in the highest ethanol productivity and cell concentration. Thus the cell recycle ratio was found to be a key factor in controlling the production of clarified overflow liquid. An aeration rate above 3.8 $\times$ 10-3 VVM seemed to decrease the ethanol productivity. The continuous fermentation with cell recycle was successfully used in the separation of cells from fermentation broth with enhancement of mixing in the tower fermentor.