• 식품과학과 산업
• /
• 제54권3호
• /
• pp.196-209
• /
• 2021

The origines of the Western roasting culture and East Asian boiling culture were studied and the importance of primitive pottery culture (8000-5000 BCE) in the Korea Strait coastal region was discussed. The primitive pottery culture probably initiated the Jjigae (stew) culture and the production of salt. It can be also postulated that fish fermentation, kimchi fermentation, and cereal alcohol fermentation originated during this period. Soybean culture emerged ca. 2,000 BCE in South Manchuria and the Korean Peninsula. This paper focuses on the role of Korean foodways in the food science and technology development for the sustainable and resilient food systems. We are facing a global food crisis caused by population growth, climate change, and high animal food consumption. Studies on the meat analog and cultured meat are the new trend in Food Science and Technology. The importance of the wisdom learned through the Northeast Asian traditional foods, for example, soybean curd (tofu) and meaty flavor production by fermentation for the research on the novel sustainable and resilient food systems are discussed.

• Nutritional Sciences
• /
• 제9권4호
• /
• pp.317-322
• /
• 2006

Soybeans are well-known as allergenic foods. Koreans consume large amounts of soybean foods, such as kochujang, which have gone through the fermentation process. To lower the allergenicity of these foods, we prepared hypo allergenic kochujang with aloe extract (AK). A sensory evaluation was conducted along with a clinical evaluation that used a double-blind, placebo-controlled food challenge (DBPCFC) test These tests were designed to evaluate the acceptability of the fermented foods. In comparison to normal kochujang (NK), AK elicited a higher sensory test score, and the rate of positive reactions in atopic dermatitis patients during the DBPCFC test was reduced. Methods of protein extraction, protein quantitation with sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), and protein identification using two-dimensional (2D) gel electrophoresis were performed for both NK and AK to compare the functional factors. We found a reduction in the levels of high molecular proteins even though the bands of the proteins had not entirely disappeared, indicating that the boiling and fermentation process changed the soybean protein patterns. The rate of the reduction of high molecular proteins was more effective in the AK. In conclusion, AK can be recognized as a food with hypoallergenic effect.

• 한국균학회지
• /
• 제31권1호
• /
• pp.28-33
• /
• 2003

설탕을 이용한 고부가가치의 버섯 발효식품 제조시 최적 발효기간을 설정하기 위하여 발효기간의 경과에 따른 버섯 발효액의 품질특성과 효소활성 및 생리기능성의 변화를 조사하였다. 점도와 색상을 나타내는 L값, a값, b값 모두 3개월까지 급격히 감소한 후 증가하는 경향이었다. 관능특성은 발효기간이 증가함에 따라 고유의 냄새와 맛은 감소하고, 다른 맛과 냄새는 증가하는 경향이었으며, 전체적인 기호도는 발효 3개월 버섯 발효액이 제일 좋은 것으로 평가되었다. 버섯 발효액 중의 ${\alpha}-amylase$ 활성은 발효 1개월까지 급격히 증가하였고, invertase와 cellulose는 대부분 활성이 낮거나 없었다. 항산화할성은 발효 4개월에 가장 높았고 그 이후에는 약간 감소하는 경향이었으며 tyrosinase 저해활성은 모든 시료에서 높은 활성을 나타내었고, 발효기간의 경과에 따라 변화가 없었다. SOD 유사활성은 팽이버섯 발효액에서 비교적 높은 활성을 나타내었으며, 발효기간에 따라서는 큰 변화가 없었다. 이상의 결과를 종합해 볼 때 설탕을 이용한 버섯 발효액 재품 생산시 최적 발효기간은 3-4개월 정도가 적합할 것으로 판단된다.

• 한국축산시설환경학회지
• /
• 제7권2호
• /
• pp.137-140
• /
• 2001

The objective of this study was isolation of halotolerant lactic acid bacteria for fermentation of food wastes. 5 strains of lactic acid bacteria were isolated from fermented foods. Among isolated strains, the strain 5-2 was selected according to the growth characteristics in food wastes containing medium. The selected strain 5-2 was identified as Pediococcus acidilactici based on its biochemical characteristics.

• 한국미생물생명공학회:학술대회논문집
• /
• 한국미생물생명공학회 2001년도 Proceedings of 2001 International Symposium
• /
• pp.158-158
• /
• 2001

• 한국식품과학회지
• /
• 제30권1호
• /
• pp.168-174
• /
• 1998

이 연구는 발효유 제조시 사용되는 Lactobacillus acidophilus NCFM이 생산하는 lactic acid의 생성변이를 조사하므로써 발효유 제조시 D(-)-lactic acid의 함량을 최소화하고 보존 중의 D(-)-lactic acid의 함량도 최소화하므로써 보다 인체에 유익한 발효유의 제조를 위한 기초적인 정보를 제공하기 위하여 실시되었으며, 그 결과는 다음과 같다. 발효온도는 $37^{\circ}C$에서 산생성이 가장 우수하였으며, D(-)-lactic acid의 비율도 가장 낮았다. 보존온도에 따른 변이에서는 저온에서 후산생성도 적었으며, D(-)-lactic acid의 비율도 가장 낮았다. 또한 처리에 따른 산생성에서는 호기상태에서 산생성이 가장 우수하였으며, D(-)-lactic acid의 함량이 가장 낮았다.

• 한국식품조리과학회지
• /
• 제24권2호
• /
• pp.243-250
• /
• 2008

This study examined the quality characteristics of soybean pastes that were prepared using different ratios of whole soybean meju inoculated with three different types of microbial strains. The five samples were prepared with meju inoculated with Aspergillus oryzae KFRI 995, Bacillus subtilis F4005, mixture with A. oryzae KFRI 995 and B. subtilis F2315, mixture with A. oryzae KFRI 995 and B. subtilis F4005, and mixture using all three strains, respectively. Over two months of fermentation, pH gradually decreased, whereas total acidity increased. And across samples and fermentation periods, there were no considerable changes in moisture or crude protein. In all five samples, amino-type nitrogen levels increased approximately 2- to 3-fold as compared to initial levels; the sample inoculated with A. oryzae KFRI 995 showed the highest level (205.2 mg%) of amino-type nitrogen. Throughout fermentation, the five samples displayed differences in their reducing sugar levels according to the inoculated microorganisms. The lowest level of lightness and highest level of redness occurred in the sample inoculated with B. subtilis F2315 showed a lowest level in lightness and a highest level of redness, indicating a strong browning reaction. Finally, the samples inoculated with A. oryzae KFRI 995 and B. subtilis F4005, respectively, showed had similarly high preference scores as compared to the other samples.

• KSBB Journal
• /
• 제30권1호
• /
• pp.27-32
• /
• 2015

The current investigation was carried out to explore the possibility of submerged fermentation of Saccharina japonica as sole substrate using Aspergillus oryzae. In this study we used 2% S. japonica powder as fermentation media for A. oryzae. Fermentation period was optimized by monitoring the fermented sample at regular intervals for a period of 7 days. Results found that a fermentation period of 5 days was effective with maximum desirable characteristics such as total sugar, total phenolic and flavonoid contents. Under optimum fermentation period, fermented extracts showed enhanced antioxidant activity as determined by different assays such DPPH radical scavenging, ABTS scavenging and phosphomolydenum assay. This study provides the information for the enhancement of bioactive molecules in an eco-friendly manner and also paves way towards the development of wide range of seaweed-based functional foods.

• 한국식품저장유통학회지
• /
• 제30권4호
• /
• pp.691-702
• /
• 2023

본 연구에서는 고부가가치 오디 식초를 개발하기 위하여 식품 미생물인 효모와 초산균을 사용하여 오디를 발효하고, 품질의 표준화는 물론 우수한 생리기능성을 함께 갖춘 식초를 제조하고자 하였다. 오디의 최적 발효균주를 선발하기 위하여 균주를 달리하여 발효를 진행하고 품질 특성 및 생리활성을 측정하였으며, 오디 발효 시 알코올과 초산 생성능이 뛰어난 S. cerevisiae SRCM101756과 A. pasteurianus SRCM102419를 발효용 균주로 최종 선발하였다. 제조된 오디 와인에 선발된 초산균을 사용하여 오디 식초를 제조하고 품질 특성 및 생리활성을 분석하였다. 오디 식초는 발효 9일 차에 pH 2.98, 총산도 4.70%로 측정되었고, 𝛼-glucosidase 저해 활성은 100배 희석 시에 발효 전 13.22%에서 발효 후 19.19%로, 50배 희석 시에 발효 전 42.35%에서 발효 후 46.11%로 활성이 증가하는 것을 확인하였다. Angiotensin-converting enzyme 저해 활성을 측정한 결과, 25배 희석 시에 발효 전 44.82%에서 발효 후 63.88%로, 50배 희석 시에 발효 전 30.10%에서 발효 후 37.24%로 angiotensin-converting enzyme 저해 활성이 증가하였고, 발효 전에 비하여 발효 후 pancreatic lipase 저해 활성도 유의적으로 증가한 것으로 나타났다. 50배 희석 시료에서 발효 전 30.01%에서 발효 후 40.25%로, 25배 시료에서는 발효 전 42.51%에서 발효 후 55.33%로 그 활성이 증가하는 것을 확인하였다. 이와 같은 결과를 토대로 오디식초는 식품미생물을 이용한 발효를 통하여 생리활성이 증진된 고부가가치 식품이며, 향후 다양한 소재로도 활용될 수 있을 것으로 판단된다.

• Journal of Microbiology and Biotechnology
• /
• 제27권2호
• /
• pp.251-261
• /
• 2017

Initially, we screened 18 Aspergillus sojae-like strains from Aspergillus spp. isolated from meju (Korean traditional fermented soybean brick) according to their morphological characteristics. Because members of Aspergillus section Flavi are often incorrectly identified because of their phylogenetic similarity, we re-identified these strains at the morphological and molecular genetic levels. Fourteen strains were finally identified as A. sojae. The isolates produced protease and ${\alpha}-amylase$ with ranges of 2.66-10.64 and 21.53-106.73 unit/g-initial dry substrate (U/g-IDS), respectively, which were equivalent to those of the koji (starter mold) strains employed to produce Japanese soy sauce. Among the isolates and Japanese koji strains, strains SMF 127 and SMF 131 had the highest leucine aminopeptidase (LAP) activities at 6.00 and 6.06 U/g-IDS, respectively. LAP plays an important role in flavor development because of the production of low-molecular-weight peptides that affect the taste and decrease bitterness. SMF 127 and SMF 131 appeared to be non-aflatoxigenic because of a termination point mutation in aflR and the lack of the polyketide synthase gene found in other A. sojae strains. In addition, SMF 127 and SMF 131 were not cyclopiazonic acid (CPA) producers because of the deletion of maoA, dmaT, and pks/nrps, which are involved in CPA biosynthesis. Therefore, A. sojae strains such as SMF 127 and SMF 131, which have high protease and LAP activities and are free of safety issues, can be considered good starters for soybean fermentations, such as in the production of the Korean fermented soybean products meju, doenjang, and ganjang.