• Title/Summary/Keyword: Fermenting

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Sensory and Microbiological Properties of Dongchimi added with Gatt (Brassica juncea) (갓 동치미의 관능적 및 미생물학적 특성)

  • 박정은;김형렬;장명숙
    • Korean journal of food and cookery science
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    • v.16 no.1
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    • pp.57-64
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    • 2000
  • An optional ingredient, Gatt(Brassica juncea) was adopted to improve the quality of Dongchimi during fermentation. The final weight percentage of Gatt in Dongchimi was adjusted to 0, 3, 5, 10, or 15%, per radish. Sensory and microbiological characteristics were determined during fermentation at 10$^{\circ}C$ for 45 days. The effect was varied depending on the amounts of Gatt, but Dongchimi fermented with 5% Gatt was most favored for color, flavor, taste, and overall acceptability in sensory evaluation. According to the quantitative descriptive analysis for the product, the liquid portion of Dongchimi steadily became clearer and less sour in proportion to the amount of added Gatt. The fermentation retarding action of Gatt at the initial stage of Dongchimi fermentation was clearly seen as above. However, the addition of Gatt at above 15% of Chinese radish was not desirable due to the accelerated fermentation at the later stage. The general changing patterns in typical characteristics of fermentation including microbial counts were comparable with each other depending on the treatments. And favorable Dongchimi could be prepared by fermenting with 5% Gatt at the given condition.

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Improved Process for Preparation of Traditional Kanjang(Korean-Style Soy Sauce) (효모첨가에 의한 재래식 간장 제조공정 개선)

  • 유진영;김현규;권동진
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.2
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    • pp.268-274
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    • 1998
  • The traditional kanjang has been prepared by mixing meju and 18% saline solution, and fermenting for 60 days. The traditional kanjang is very salty and inferior in flavor and taste comparing with commercial fermented soy sauce. To improve the quality of traditional kanjang, Zygosaccharomyces rouxii H-62, a flavor-related mutant, was inoculated during fermentation. It was found that the addition of Z rouxii helped to improve the organoleptic quaity of traditional kanjang. The optimal condition for preparing traditional kanjang was to use 5L of 15.5% saline solution per meju. Meju must be cut into 12 pieces to get a proper total nitrogen and pure extract content. The optimal fermentatin temperature was 3$0^{\circ}C$. The prepared kanjang contained over 0.8% total nitrogen and 6.0% pure extract after 60 days of fermentation.

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Studies on the changes of methanol content in manufacturing process of apple wine and it's brandy (Apple wine 및 apple brandy 제조공정에 있어서의 methanol 함량의 추이에 관한 연구)

  • 이성범
    • Korean Journal of Microbiology
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    • v.5 no.2
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    • pp.55-60
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    • 1967
  • Studies on the changes of methanol content in the manufacturing process of apple wine and apple brandy. The results from the studies of transition and changes of methanol content in the fermentation of wine and brandy from Korean apple, Kugkwang and Iwai are as follows. 1) Pectin, the source of methanol, can be extracted as dregs more than 85% of its in the process of pressing to get juice. 2) In the process of fermenting wine, the occurence of methanol depends on the condition of the apple itself (i.e. species, freshness, change in quality, or corruption). It seems that the insoluble pectin in the fresh apples changes into the soluble pectin as time goes by. 3) The heating treatment of fresh apples produced more methanol compared with nonheating treatment. 4) The content of methanol in apple brandy can influence free methanol content in mash pulp.

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A Study on Sensory Measures Suitable for an Evaluation of Taste of Long-term Stored Kimchi (장기 저장 김치 맛 평가에 적합한 관능 척도에 대한 연구)

  • Kwon, Soo-Ho;Lee, Myung-Seok;Lee, Dhong-Ha
    • IE interfaces
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    • v.13 no.4
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    • pp.745-750
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    • 2000
  • This paper evaluated the 12 sensory measures suitable for evaluating taste of kimchi stored for 64 maturing days in the three kimchi refrigerators each made by the three different electronics companies respectively. The panel composed of 6 married women and 6 married man tasted sample of kimchi 8 times during the 64 maturing days. Analysis of variance results showed that among the 12 sensory measures sour smell, fresh smell, fermenting smell, sour taste, fresh taste, sensory satisfaction, and maturing degree were sensitive to differentiate both maturing days and refrigerators. Among sensory measures, maturing degree showed the most consistently increasing pattern during maturing days and the most consistently differentiating pattern for the refrigerators.

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A Literature Study on Fermented Korean Medicinals Used in Dermatology (피부질환에 사용된 발효한약에 관한 문헌고찰)

  • Pahng, Sung-Hye
    • Korean Journal of Oriental Medicine
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    • v.17 no.3
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    • pp.53-60
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    • 2011
  • The objective of this article is to investigate the kinds of fermented Korean medicinals used to cure dermatological diseases in past Korea. The method to do this study was to search the books on the website, Knowledge of Oriental Medicine Web Service, databased and serviced by Korean Institute of Oriental Medicine. Books and related chapters were searched to find fermented medicinals. The results was as follows. According to the website search, eleven kinds of fermented medicinals could be found to cure scabies, leprosy, scrofuloderma, molluscum contagiosum and tinea capitis. The way how to ferment, the purpose of fermenting and regarding historical features could also be found.

Anti-fatigue and Hepatoprotective Effects of Fermented Antler (발효녹용의 항피로 및 간장보호 효과)

  • Shim, Joo-Won;Kim, Nam-Jae;Kim, Young-Su;Kim, Dong-Hyun
    • Korean Journal of Pharmacognosy
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    • v.43 no.1
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    • pp.54-58
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    • 2012
  • To increase the extraction yield and biological effect of antler by fermentation, probiotics fermenting antler were screened from rice shells. Of screened Bacillus species, the most potently antler-degrading probiotics was Bacillus KH-07. The supernatant yield of fermented antler is highest. Bacillus KH-07 may belong to Bacillus licheniformis by biochemical and 16S rDNA sequencing analyses. The KH-07-fermented antler (50 mg/kg) increased the anti-fatigue effect 2.3-fold compared to that of non-treated antler. Furthermore, the KH-07-fermented antler improved $CCl_4$-induced liver injury in mice. Based on these findings, the extraction yield and biological effect of antler can be increased by KH-07 fermentation.

Volatile Flavor Components in Pumpking Vinegar

  • Hur, Sung-Ho;Lee, Wonkoo
    • Preventive Nutrition and Food Science
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    • v.3 no.2
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    • pp.119-122
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    • 1998
  • Pumpkin venegar was produced using autoclaved pumpkin juice by fermenting with cetobacter starter and ethanol at the ratio of 4 % and 10% to the volume of pumpkin juice, respectivley. Fermentation was carried out at 2$0^{\circ}C$ for 14 days followed by aging at 1$0^{\circ}C$ for 14 days. Flavor components of pumpkin vinegar was determined using GC/MS. Identified components, were 2 aldehydes (4.74%), 5 acohols (30.06%), 4 ketones (8.99%), 4 acids (16.39%), 5 alkanes (11.10%), 11 miscellaneous compounds (27.01%) and 9 unknown compounds (1.71%). Pumpkin vinegar showed very similar flavor characteristics to those of conventional wien vinegar and sherry wine vinegar in particular , acetioin, methyl acetate, and butanoic acid were typical volatile components of these three kinds of vinegar. Pumpkin vinegar showed possiblity to compete with European wine vinegar.

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1H-NMR Analysis of Metabolic Changes Induced by Snf1/AMP-Activated Protein Kinase During Environmental Stress Responses

  • Kim, Jiyoung;Oh, Junsang;Yoon, Deok-Hyo;Sung, Gi-Ho
    • Mycobiology
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    • v.47 no.3
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    • pp.346-349
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    • 2019
  • AMP-activated protein kinase sucrose non-fermenting 1 (Snf1) is a representative regulator of energy status that maintains cellular energy homeostasis. In addition, Snf1 is involved in the mediation of environmental stress such as salt stress. Snf1 regulates metabolic enzymes such as acetyl-CoA carboxylase, indicating a possible role for Snf1 in metabolic regulation. In this article, we performed nuclear magnetic resonance (NMR) spectroscopy to profile the metabolic changes induced by Snf1 under environmental stress. According to our NMR data, we suggest that Snf1 plays a role in regulating cellular concentrations of a variety of metabolites during environmental stress responses.

A Study on the Physicochemical Properties Alteration of Aloe Saponaria Fermentation

  • Kweon, Do-Yeong;Kang, Min-Woo;Park, Jong-Min;Kim, Jong-Soon;Kwon, Soon-Goo;Choi, Won-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.23 no.6_1
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    • pp.897-906
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    • 2020
  • This research focuses on the physicochemical characteristic of fermentation of Aloe Saponaria. The fermentation process applied in this study had 2 variation, depends on the aloe part as the materials (bottom, middle, and tip) and the initial sugar content (24% and 0%) used. Tests are conducted using uinkin fermented powder, sugar, salt, and distilled water as fermenting agent. The results indicate that change in physicochemical properties of aloe's skin was larger than in aloe's gel as fermentation materials. In contrast, there was no significant change in aloe's leaf during the process. A lso, aloes with intial sugar condition of 24% show better results than which without sugar addition in fermentation.

Quality characteristics and antioxidant activities of cheonggukjang prepared with soybean and lotus seeds

  • Jeon, Hyo-Won;Dhungana, Sanjeev Kumar;Kim, Il-Doo
    • Korean Journal of Food Science and Technology
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    • v.53 no.2
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    • pp.126-132
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    • 2021
  • Cheonggukjang (CGJ) is a famous traditional Korean food that is typically produced by fermenting steamed soybean seeds and has a unique flavor and taste. The objective of this study was to evaluate the effect of addition of lotus seeds on the quality and antioxidant activities of CGJ. Color value, 1,1-diphenly-2-picrylhydrazyl radical scavenging potential, and the amounts of total polyphenol, total flavonoid, mineral, and free amino acid were evaluated. The CGJ sample produced with lotus alone or a mixture of soybean and lotus produced in Korea showed relatively high antioxidant potential. The amount of essential and total free amino acids was also high in the sample prepared with lotus seeds grown in Korea. On the other hand, the total mineral content was low in the lotus-based samples. The results indicated that a mixture of an equal proportion of soybean and lotus seeds could be a good option to prepare nutritious CGJ.