• 한국균학회지
• /
• 제13권4호
• /
• pp.235-241
• /
• 1985

본 연구는, catabolic repression시킨 효모세포를 완전배지와 최소배지에서 derepression시켜, 배양시기 및 인산 첨가농도(free, limited, sufficient)에 따른 5종의 다당류 합성변화를 조사하였다. 그리고 다당류 합성과 무기폴리인산 축적량 및 인지질 합성 사이의 상관지수를 구하여 합성시 관련되는 유의한 정도를 검정하였다. 그 결과, 최소배지에서 catabolic derepression시킨 효모세포가, 완전배지에서 derepression시킨 세포에 비하여, glycogen의 합성이 발리 그리고 많이 일어났고, acid soluble glycogen type이 주된 함량을 나타내었으며, alkali soluble glycogen은 당이 많이 소모된 24시간 배양 후에 소량 나타났다. 무기인산 첨가정도에 따라 total glycogen합성이 일정한 비율로 빨리 그리고 높게 일어났다. Glucan의 합성에는 ALPase 중 ALPase "C"가 관련할 것으로 추정되었다. Mannan은 ezponential phase초기와 정체기때, acid soluble 분획은 정체기때 최대함량을 나타내었다. Mannan 합성과 poly-P "C"축적량 사이의 상관지수는 0.866, mannan합성과 인지질 사이의 상관지수는 0.726으로 나타나 매우 유의하였다.

• 한국식생활문화학회지
• /
• 제6권1호
• /
• pp.61-69
• /
• 1991

경상도지방의 전통적인 등겨장제법을 조사하고 10종의 시료를 채취하여 성분분석 및 관능시험으로 품질을 평가하였다. 등겨장의 맛을 좋게 하기 위하여 부원료는 적당량의 콩 등을 첨가하여 주로 자연 숙성방법으로 등겨장을 제조하고 있다. 전통 등겨장의 성분 중 아미노태질소 함량은 낮았으며 수용성 및 염용해성 단백질의 아미노산 조성은 다같이 glutamic acid, aspartic acid 및 proline의 함량이 많았다. 등겨장의 당의 함량은 대체로 높았으며 유리당 중 glucose의 함량이 $2.16{\sim}4.02\;mg/ml$로써 가창 많았고 maltose, matotriose 순이었다. 산성 protease의 활성은 $0.13{\sim}1.36\;unit/ml$였으며 전분액화력은 $10.18{\sim}15.19\;D^{40o}_{30}$으로서 등겨장의 감미를 크게 증가시켰다. 관능시험의 결과 선정된 3종류의 우량 등겨장은 매운맛과 단맛, 산미가 잘 조화된 전통식품으로 향기는 약간의 메주향에다 매운맛이 잘 조화된 향취를 나타내었다.

• 한국식생활문화학회지
• /
• 제16권2호
• /
• pp.118-127
• /
• 2001

The method of the squid safe made in Kyungsando was examined, and fermentation precess was established. The chemical composition and functional effects of the squid sikhe were examined. In the sensory evaluation, the squid sikhe made from Gampo accepted to be best for traditional Kyungsangdo squid sikhe and it is called standard sikhe. The Gampo sguid sikhe showed higher values in total sugar, free reducing sugar and nitrogen compound analysis compared to the orthers. The sugar of standard sikhe consisted of four kinds including glucose. The contents of free amino acid was increased in the order of glutamic acid, alanine, and methionine. The composition of amino acid in water or salt soluble protein of squid sikhe contained 17 kinds, and the contents was increased in order of glut amine acid, aspartic acid, and proline.

• Journal of Ginseng Research
• /
• 제9권1호
• /
• pp.104-111
• /
• 1985

The quality of concentrated red ginseng extract, which was prepared from Korean red ginseng tails, was studied with respect to the changes in the ethanol concentration in the range of 0-90% and temperature of 70-10$0^{\circ}C$ during 1-5 times of extraction. Each extraction time was taken 8 hours at given temperature. The ratio of free sugars to total sugar changed significantly with the number of extraction and ethanol concentrations. An increase in reducing sugar and free sugars and a decrease in extracted soluble starch were fond as ethanol concentration increased. Extraction temperature was found little effect on extractability of sugars and their ratios. Analysis of free sugars in red ginseng extract identified 6 frdd sugars such as rhamnose, xylose, fructose, glucose, sucrose and maltose, including sucrose to be major.

• 한국식품저장유통학회지
• /
• 제3권1호
• /
• pp.7-13
• /
• 1996

Total carbohydrates of Kumquats was 14.69% Kumquats, Citrus natsudaidai, and C. platgmama contained 18.3, 11.1 and 13.0%, of soluble solids, and 42.39, 32.09 and 20.13mg/100g, of vitamin C, respectively. Acid contents of C. natsudaidai and C. plafmama harvested on March 1995 in south Cheju were 2.52% and 0.89% . In preparing of Kumquats-tea, combination of 50% honey and sugar, 5% oligo-sugar, 32% Kumquats slice, 13% juice of C. natsudaidai were the best recipe for sensory evaluation. In C. natsudaidai-tea, combination of 5∼10% peel slice treated at 90$^{\circ}C$ for 1min, 50∼60% concentration of sugar and 35∼40% of flesh of C. natsudaidai were good. for sensory evaluation. Microbial growth was not observed in the sterilized products for more than one month at 30$^{\circ}C$.

• 한국식품저장유통학회지
• /
• 제4권2호
• /
• pp.155-162
• /
• 1997

This work was designed to determine the effect of steaming-Pretreatment on Physicochemical and functional properties of roasted Polygonatum odoratum roots. Steaming treatments led to some reduction in the contents of water solubles, such as total solid, reducing sugar and free-amino nitrogen of the unroasted samples. Moreover, roasting processing caused decrease in reducing sugar and free-amino acid, with increase in total soluble solid and browning color of the samples, which showed the dependence of steaming treatment as well as roasting temperature. Electron-donating ability and nitrite-scavenging ratio of the samples were also highly developed along with roasting processing at 17$0^{\circ}C$ within 35min. Considering the physicochemical and some functional parameters of water extracts of roasted samples, roasting at above 14$0^{\circ}C$ for over 55min or at 17$0^{\circ}C$ for around 35min was recommendable for the higher quality of Polygonatum odoritum tea, which conditions were similarly adapted for both steamed and unsteamed samples.

• 한국식품저장유통학회지
• /
• 제19권5호
• /
• pp.619-625
• /
• 2012

In the present study, the proximate composition, sugar, minerals, total phenolic and flavonoid compounds, and amino acids in Calystegia japonica (C. japonica) were measured to determine if it can be used as a nutritional and functional material for the development of valuable foods. The mean crude protein, fat, and ash contents of the leaves were 5.75, 2.46, and 7.77%, respectively. The soluble-protein contents of the leaves and roots were 146.78 and 33.67 mg%, respectively. The reducing-sugar and free-sugar contents of the leaves were 682.70 and 166.00 mg%, respectively, and those of the roots were 2,934.89 and 37.70 mg%. The mineral content of the leaves was 3,122.13 mg%, and that of the roots was 1,540.85 mg%. The three elements Ca, K, and Mg were very rich in all their parts, with minerals accounting for 96-99% of their total mineral contents. The total phenolic compound of the leaves was 3,028.89 mg%, and the total flavonoid compound was 382.67 mg%. The phenolic and flavonoid compounds in the leaves were more than 7.6 times those in the roots. The free-amino acid levels in the leaves and roots were 2,467.15 and 1,334.81 mg%, respectively. The results of the comparison of the leaves and roots of C. japonica showed that the leaves had a rich proximate composition consisting of minerals, total phenolic and flavonoid compounds, and amino acid. This suggests that C. japonica leaves are potentially useful sources of functional and favorite foods and nutraceuticals.

• 한국식품저장유통학회지
• /
• 제2권2호
• /
• pp.251-257
• /
• 1995

In order to determine the quality of Citrus unshiu(medium cultivar of satsuma mandarin) produced in Cheju, citrus fruits sampled at sorting places and harvested directly on citrus tree in south and north area of Cheju were analyzed. The fruits were grown in size till early of November, and soluble solids were increased continuously after that. Compared with the quality of citrus fruits as a factor of soluble solids, firmness, total sugar, pH, and color index, the optimum harvest periods were supposed to be reasonable from early of December for C. unshiu Marc. var. yonezawa and C. unshiu Marc. var. hayashi, Fruit weights and peel thickness had a linear correlation with increasing fruit size, but soluble solids and acid contents had not a correlation. The selection of C. unshiu variety was needed to determine by the properties of storage.

• 생물환경조절학회지
• /
• 제15권4호
• /
• pp.390-395
• /
• 2006

토마토 유묘의 생육에 미치는 glycine betaine의 엽면처리 효과를 분석한 결과, 초장이나 건물중 등의 생육이 대조구인 증류수 처리에 비해 촉진되는 경향을 보였으며 25mM glycine betaine 처리가 가장 좋았다. 저온스트레스 하에서 삼투조절 역할을 하는 가용성 당과 proline의 축적량이 증류수 처리에 비해 glycine betaine처리에서 낮은 경향을 보여 외부에서 엽면 처리한 glycine betaine이 삼투조절 역할을 한 것으로 판단되었으며 이러한 결과는 수용성 단백질과 유리 아미노산의 축적 양상에서도 잘 반영되었다. 이상의 결과로 보아 glycine betaine의 엽면 처리는 저온기 시설 토마토 재배 시 야간 저온장해를 극복할 수 있는 방법으로서 이용 가능성이 있을 것으로 사료된다.

• Journal of Ginseng Research
• /
• 제45권3호
• /
• pp.442-449
• /
• 2021

Background: Panax ginseng is an important crop in Asian countries given its pharmaceutical uses. It is usually harvested after 4-6 years of cultivation. However, various abiotic stresses have led to its quality reduction. One of the stress causes is high content of heavy metal in ginseng cultivation area. Plant growth-promoting rhizobacteria (PGPR) can play a role in healthy growth of plants. It has been considered as a new trend for supporting the growth of many crops in heavy metal occupied areas, such as Aluminum (Al). Methods: In vitro screening of the plant growth promoting activities of five tested strains were detected. Surface-disinfected 2-year-old ginseng seedlings were dipping in Rhizobium panacihumi DCY116^T suspensions for 15 min and cultured in pots for investigating Al resistance of P. ginseng. The harvesting was carried out 10 days after Al treatment. We then examined H₂O₂, proline, total soluble sugar, and total phenolic contents. We also checked the expressions of related genes (PgCAT, PgAPX, and PgP5CS) of reactive oxygen species scavenging response and pyrroline-5-carboxylate synthetase by reverse transcription polymerase chain reaction (RT-PCR) method. Results: Among five tested strains isolated from ginseng-cultivated soil, R. panacihumi DCY116^T was chosen as the potential PGPR candidate for further study. Ginseng seedlings treated with R. panacihumi DCY116^T produced higher biomass, proline, total phenolic, total soluble sugar contents, and related gene expressions but decreased H₂O₂ level than nonbacterized Al-stressed seedlings. Conclusion: R. panacihumi DCY116^T can be used as potential PGPR and "plant strengthener" for future cultivation of ginseng or other crops/plants that are grown in regions with heavy metal exposure.