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Korean traditional fermented soybean products: Jang
Donghwa Shin,Doyoun Jeong 한국식품연구원 2015 Journal of Ethnic Foods Vol.2 No.1
Soybeans are produced in large amounts around the world. In Asian countries, soybeans have been used mostly as a source of food, and in Western countries, they have been used as animal feed and in non-food products. However, since scientific evidence of the dietary benefits of soybeans has been published, the use of soybeans as a food ingredient has increased. In Asia, soybeans have been used in various ways on their own and also combined with fermented products to be used as seasonings or side dishes. According to some sources, the use of soybeans in Korea dates back to B.C. Currently, more research is being conducted on soybeans, and the benefits of fermented soybean products are coming to light. Fermented products are going beyond the boundaries of their use as mere side dishes, and are seeing significant increases in their use as a functional food. Kanjang (fermented soy sauce), Doenjang (fermented soybean paste), and Gochujang (fermented red pepper paste) are the most well-known fermented products in Korea. These products occupy an important place in people's daily lives as seasonings and are used in many side dishes. It has been proven through clinical studies that these products have many health benefits, such as their ability to fight cancer and diabetes, and to prevent obesity and constipation.
직류전류 인가를 통한 김으로부터 포피라334의 대량 정제 고도화
장성주(Sung Joo Jang),이정훈(Jeong Hun Lee),서효현(Hyo Hyun Seo),이삭(Sak Lee),김지연(Jiyeon Kim),김도연(Doyoun Kim),모상현(Sang Hyun Moh) 한국해양바이오학회 2020 한국해양바이오학회지 Vol.12 No.1
Marine algae contain a variety of substances, such as mycosporine-like amino acids, which can defend against UV irradiation. Among them, Porphyra-334 derived from Porphyra yezoensis is attracting attention as a novel active ingredient for anti-aging cosmetics because of its excellent anti-oxidative, anti-inflammatory, and wound-healing properties through promoting skin cell migration. In this study, a process using direct current (DC) for increasing the yield of large-scale purification of Porphyra-334 was developed. When DC was applied to obtain Porphyra-334 efficiently, the purification time was shortened by approximately 1/4 compared with the process wherein DC was not applied; moreover, the yield of purification was improved.
Li, Yan,Kim, Ryunhee,Cho, Yi Sul,Song, Woo Seok,Kim, Doyoun,Kim, Kyungdeok,Roh, Junyeop Daniel,Chung, Changuk,Park, Hanwool,Yang, Esther,Kim, Soo-Jeong,Ko, Jaewon,Kim, Hyun,Kim, Myoung-Hwan,Bae, Yong- Society for Neuroscience 2018 The Journal of neuroscience Vol.38 No.26
<P>SALM1 (SALM (synaptic adhesion-like molecule), also known as LRFN2 (leucine rich repeat and fibronectin type III domain containing), is a postsynaptic density (PSD)-95-interacting synaptic adhesion molecule implicated in the regulation of NMDA receptor (NMDAR) clustering largely based on in vitro data, although its in vivo functions remain unclear. Here, we found that mice lacking SALM1/LRFN2 (Lrfn2(-/-) mice) show a normal density of excitatory synapses but altered excitatory synaptic function, including enhanced NMDAR-dependent synaptic transmission but suppressed NMDAR-dependent synaptic plasticity in the hippocampal CA1 region. Unexpectedly, SALM1expression was detected in both glutamatergic and GABAergic neurons and Lrfn2(-/-) CA1 pyramidal neurons showed decreases in the density of inhibitory synapses and the frequency of spontaneous inhibitory synaptic transmission. Behaviorally, ultrasonic vocalization was suppressed in Lrfn2(-/-) pups separated from their mothers and acoustic startle was enhanced, but locomotion, anxiety-like behavior, social interaction, repetitive behaviors, and learning and memory were largely normal in adult male Lrfn2(-/-) mice. These results suggest that SALM1/LRFN2 regulates excitatory synapse function, inhibitory synapse development, and social communication and startle behaviors in mice.</P>
전통 장류에서 분리한 Biogenic Amines 저감 유산균 Pediococcus pentosaceus의 분리 및 특성
오현화,류명선,허준,전새봄,김용상,정도연,엄태붕,Oh, HyeonHwa,Ryu, MyeongSeon,Heo, Jun,Jeon, SaeBom,Kim, Young Sang,Jeong, DoYoun,Uhm, Tai-Boong 한국미생물학회 2014 미생물학회지 Vol.50 No.4
Two bacterial strains, named as LE17 and LE22, were isolated from traditionally fermented soybean products in order to select lactic acid bacteria for the reduction of biogenic amines and harmful bacteria. Both strains were identified as Pediococcus pentosaceus by 16S rRNA sequence analysis and additional biochemical tests. The strain LE17 reduced the amines by 13.7% for histamine and by 25.9% for tyramine, when it grew in minimal synthetic media containing 0.1% (w/v) histamine and 0.1% tyramine at $30^{\circ}C$ for 48 h, while the strain LE22 reduced the amines by 23.7% for histamine and by 15.7% for tyramine. Both strains also had broad inhibition spectra against pathogens. Considering their properties, they could be used as starters for industrial soybean fermentation. 장류 식품에서 biogenic amines 저감 기능과 유해균 저해 능력을 동시에 지닌 유산균을 선발하기 위해, 전통방식으로 제조한 장류 시료로부터 2종의 균주를 분리하였다. 생화학적 동정 및 16S rRNA 유전자 염기 서열을 분석 결과 이들 균은 유산균인 Pediococcus pentosaceus로 동정되었다. 질소원으로 0.1% (w/v) histamine과 0.1% tyramine이 첨가된 최소 합성 배지에서 $30^{\circ}C$, 48시간 배양 후 잔류 amine을 분석한 결과, LE22 균주의 경우 histamine은 23.7%, tyramine은 15.7%가 감소한 반면, LE17의 경우 histamine은 13.7%, tyramine은 25.9%가 감소하였다. 장류에서 발견되는 주요 유해균에 대한 항균 효과를 조사한 결과, 두 균주 모두 유해균들에 대해 항균 작용을 보였다. 두 균주의 발효 특성을 고려했을 때 이들은 유산균 종균으로써 산업적 장류 생산에 적용할 수 있을 것으로 보인다.