• Title/Summary/Keyword: flavors

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Identification of Yeasts Producing Flavor from Tobacco Powder and the Organoleptic Properties of Their Products (담배 이분(泥粉)으로부터 향을 생성하는 효모의 분리, 동정 및 그 향의 관능적 특성에 관한 연구)

  • Song, Chi-Hyeun;Kang, Eun-Heuy;Park, Eun-Su
    • Journal of the Korean Society of Tobacco Science
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    • v.3 no.2
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    • pp.95-102
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    • 1981
  • From various sources of natural habitat yeasts, which coo 14 transform the constituents of tobacco Powder into flavors, were isolated and three isolates. YOII, M4-1, and M 19-1, were selected These were identified, by their biological characteristics, as Hansenuia ciferri, Pichia acaciae and Candida tropicalis, respectively. Their ferments were extracted with petroleum ether and fractionated into basic, neutral and acidic fractions. The major organoleptic properties of the fermented flavors were detected in the neutral fractions by the sensory test and the yields and threshold values of those fractions were determined and the organoleptic characteristics were described as well.

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Production of main Taste Components in Traditional Korean Soy Sauce by Bacillus licheniformis (Bacillus licheniformis를 이요한 한국 재래식 간장의 주요맛 성분)

  • Kim, Haeng-Ja
    • Korean journal of food and cookery science
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    • v.8 no.2
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    • pp.73-82
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    • 1992
  • This study investigated conditions necessary for factory production of traditional Korean soy sauce flavors, using Bacillus licheniformis SSA3-2M1. We determined whether the flavors were good or bad by comparing sensory evaluation values and the contents of the main taste components of traditional Korean soy sauce with those of the manufactured soy sauce. The soy broth was cultured by Bacillus licheniformis SSA3-2M1. By providing from 1/3 vvm to 2/3 vvm of air, and a culturing time of 412 hours at 30$^{\circ}C$, we produced the taste of traditional Korean soy sauce; moreover its PH was in the PH range of traditioal Korean soy sauce. The distributions of the main taste components and the amino acids, free sugars, and organic acids in the manufactured soy sauce were similar to tradituioal Korean soy sauce.

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Design and Implementation of an Automated Fruit Quality Classification System

  • Choi, Han Suk
    • Smart Media Journal
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    • v.7 no.4
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    • pp.37-43
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    • 2018
  • Most of fruit quality classification has been done by time consuming, inaccurate and intensive manual labor. This study proposed an automated fruit grading system based on appearances and internal flavors. In this study, image processing technique and a weight checker were used to measure the value of appearance features and the near infrared spectroscopy analysis method was used to estimate the value of internal flavors. Additionally, I suggested 8x8x5x5 ANN based fruit quality classifier model to grade fruits quality. The proposed automated fruit quality classification system is expected to be very beneficial for many farms where heavy manual labor is usually needed for fruit quality classification.

Aromatic Ingredients and Distinct Flavors of the Koguma-Soju Produced from Korean Sweet Potato Varieties Yeonmi, Jeungmi, Shincheonmi, and Shinyeulmi (한국산 고구마 품종인 연미, 증미, 신천미, 신율미를 이용하여 제조한 고구마 소주의 향기성분의 특성)

  • Kim, Myoung Hui;Yoshitake, Kazuya;Takamine, Kazunori;Lee, Hyeong-Un;Kim, Won Sin
    • Korean Journal of Food Science and Technology
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    • v.47 no.1
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    • pp.51-55
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    • 2015
  • Four varieties of the Korean sweet potato, Yeonmi, Jeungmi, Shincheonmi, and Shinyeulmi, were chosen to prepare the distilled koguma-soju (sweet potato-soju). The relationship between the flavor of the koguma-soju and the content of monoterpene alcohols (MTAs) was studied. The MTAs investigated here were linalool, nerol, geraniol, citronellol, and ${\alpha}$-terpineol. The ranges of MTA concentrations in the koguma-soju made from the four sweet potato varieties were $14.0-16.6{\mu}g/L$ for nerol, $24.8-34.7{\mu}g/L$ for linalool, $32.8-38.5{\mu}g/L$ for geraniol, $37.8-54.2{\mu}g/L$ for citronellol, and $76.6-94.7{\mu}g/L$ for ${\alpha}$-terpineol. Geraniol, nerol, and linalool were found in lower concentrations, while ${\alpha}$-terpineol was present in a higher concentration compared to their average content in the imo-shochu, a distilled Japanese sweet potato-soju. The concentrations of citronellol in the koguma-soju and imo-shochu were similar. The flavor evaluation tests revealed that the koguma-soju produced from the Yeonmi variety had a leafy vegetable or a grass-like, sharp flavor, whereas the Jeungmi-soju was characterized by a fruity or a sulfur-like sharp taste. Floral, vanilla-like, and mild flavors were predominant in the Shincheonmi-soju, while the Shinyeulmi-soju had either a fruity, citrus-like flavor or a rubber-like, rough taste. This study demonstrates that koguma-soju made from different sweet potato varieties have unique characteristic flavors.

Characterization of Off-flavors from Film-Packed Soybean Sprouts (필름 포장된 콩나물의 유통 중 축적되는 이취의 종류 및 발생 특성)

  • Cho Kyoung-Shim;Kim Yong-Ho;Lee Young-Sang
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.51 no.3
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    • pp.220-226
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    • 2006
  • Soybean sprout is a traditional food and its market circulation as packed in a transparent film is increasing. To characterize the off-flavor produced from film-packed soybean sprouts, harvested soybean sprouts were stored at different temperature and oxygen conditions, and time-series changes in heads pace $O_2,\;CO_2$, ethanol (EtOH) concentrations as well as sensory off-flavor levels were measured. Lower temperature resulted in lower consumption of $O_2$, lower production of EtOH and less off-flavor. No off-flavors could be detected when atmospheric $O_2$ concentration was maintained over 4%, while alcoholic-flavor and off-flavor were initiated when $O_2$ decreased down to 2% and 1%, respectively. Under low $O_2$ conditions alcoholic-flavor following EtOH production preceeded prior to sensory off-flavor detection. Various aldehydes and fatty acids such as nonylaldehyde, decylaldehyde and stearic acid were identified by GC/MS from film-packed sprouts producing off-flavors. In conclusion to suppress off-flavor, soybean sprouts should be packed in a film which can control $O_2$ concentration over 2% and stored at low temperature around $4^{\circ}C$.

Rapid Fermentation Starter Enterococcus faecium of Soybean for Soy-Sauce Like Product (간장태 신속 대두발효 종균으로의 Enterococcus faecium)

  • Lee, Young-Duck;Park, Jong-Hyun
    • The Korean Journal of Food And Nutrition
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    • v.25 no.1
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    • pp.188-195
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    • 2012
  • To produce rapidly the traditional Kanjang soy sauce-like product with rich flavors, lactic acid bacteria of Enterococcus spp. isolated from Chungkukjang was used as one of starter cultures. Among 119 Enterococcus spp., eight strains were selected by protease-secreting activities and identified as four E. faecium, three E. faecalis, and one E. gallinarium. The strains showed low resistances toward eight antibiotics and had no resistant genes to the vancomycin. Especially, E. faecium O24 was cultivated well on 5% NaCl medium that was selected for further study as the starter. E. faecium O24 grew well on the steamed soybean and the counts increased by ten times overnight, which produced mostly 80 mg% glutamic acid and aspartic acid as the seasoning amino acids on the product. Various organic acids including principal lactic acid were also produced. Flavors of maltol and guaiacol, typical soy-sauce flavor, were produced in the mixed cultures of Zygosaccharomyces rouxii and Candida versatilis. Therefore, E. faecium O24 could be a starter of soybean fermentation for soy sauce-like product with rich flavors rapidly.

A Study on the Mechanism of Opening-with-Pungent/Lowering-with-Bitter Method of Wenbing and the Spleen/Stomach Disease Treatment in Piweilun (온병학(溫病學) 신개고강법(辛開苦降法)과 『비위론(脾胃論)』의 비위병(脾胃病) 치료 기전에 대한 고찰)

  • Ahn, Jinhee;Kim, Do-hoon
    • Journal of Korean Medical classics
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    • v.33 no.3
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    • pp.91-109
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    • 2020
  • Objectives : The aim of this paper is to compare the mechanisms of the OP/LB method and the SSD treatment in 『Piweilun』. Methods : Wenbing texts, articles on the OP/LB method, and the 『Piweilun』 was examined for comparison of treatment mechanisms of SSD. Results : The mechanism of the OP/LB method in treating SSD was to treat the Spleen and Stomach separately, to restore the ascending/descending pattern of qi through simultaneous use of pungent and bitter flavors which raises and lowers, respectively. Moreover, the use of medicinals with contrary properties regulate the other's biased nature, and none of the medicinals create dampness. The pungent and bitter flavors play central roles, where the pungent flavor opens and communicates and the bitter flavor clears and lowers. The treatment method of SSD in the 『Piweilun』 treat the Spleen and Stomach together, with a focus on raising and dispersing through upraising yang and reinforcing qi by means of Wind medicinals with pungent and bitter flavors added to sweet and warm medicinals. Conclusions : Owing to the expansion of the OP/LB method concept by modern-contemporary scholars, the potential for treating SSD as can be seen in the 『Piweilun』 with the OP/LB method has emerged. The similarity between the OP/LB method and treatment of SSD in the 『Piweilun』 is that the objective of the formulas is to lower fire heat and communicate qi to help qi movement. This common objective allows for treatment of SSD within Wenbing and those in 『Piweilun』 with the said formulas through appropriate modification fit for each situation.