• 한국식품과학회지
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• 제20권6호
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• pp.774-779
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• 1988

참쑥(Artemisia lavandulaefolia DC)의 정유를 gas chromatogaphy/mass spectrometry(GC/MS)로 정성분석하고, 저장조건을 달리하여 정유성분의 변화를 살펴본 결과, 다음과 같은 결론을 얻었다. 1. 186 이상의 화합물이 검출되었으며, 그 중 1,8-cineol, camphor, ${\beta}-thujone$, caryophyllene, borneol, coumarin, linalool, terpineol, sabinene, 7-methoxy coumarin ${\alpha}-copaene$, humulene과phytol이 중요성분이었다. Artemisia species에서는 지금까지 밝혀진 바 없는 3,6,6-trimethyl norpinanol, ${\beta}-farnesene$, 7-methoxy coumarin, ${\alpha}-curcumene$ 등이 검출되었다. 2. 참쑥의 저장에 따른 색과 변화를 조사한 결과, 온도에 의해 갈색화와 성분의 증감이 있었다. 즉, 냉암소에 보관된 시료는 변화가 거의 없었으나, 상온방치한 시료는 Air와 질소에 상관없이 모두 변화가 있었다. 1,8-cineol, limonene, 2,2,4-trimethyl 1,3-dioxolane-4-ethanol, terpinene-4-ol 등은 감소하였으며, ${\beta}-phellandrene$, benzyl benzoate, broneol, ${\alpha}-terpineol$, humulene 등은 증가하였다.

• 한국식품저장유통학회지
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• 제5권1호
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• pp.57-63
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• 1998

To furnish basic data about the utilization of Korean loquat as flood, this experiment was conducted. Nutritional components in leaves, fruit excluded seed, flesh and seed of Korean loquat were analyzed as follows : moisture 48.7%, 87.8%, 88.3% and 59.5% ; total sugar 1.57%, 7.21%, 7.36% and 2.41% ; crude protein 5.23%, 1.61%, 1.44% and 4.31% in each portion, respectively. The highest mineral contents of loquat leaves, fruit excluded seed, flesh and seed were Ca 2,458ppm, K 661ppm, 654ppm and 1,528ppm, and water soluble vitamins such as ascorbic acid, thiamin and pyridoxine were confirmed in different pares of Korean loquat, the contents of those were high thiamin 5.86mg% in leaves and ascorbic acid 1.l0mg%, 1.26mg% and 4.90mg% in fruit excluded seed flesh and seed, respectively. The contents of free sugars were high sucrose 0.87%, glucose 0.62%, 0.6475 and rhamnose 0.20%, and major organic acid were detected oxalic acid 1,693.70mg%, malic acid 201.70mg%, 207.60mg% and citric acid 55.70mg% in each portion, respectively. Free amino acid were identified 21, 14, 14 and 16 kinds of leaves, fruit excluded seed, flesh and seed, respectively and their contents in each portion were highest glutamic acid 280.22mg%, proline 35.l0mg%, glutamic acid 56.96mg% and sarcosine 230.24mg%, respectively. Volatile components were identified 25 and 11 kinds of leaves and flesh and their contents were highest d-nerolidol 28.70ppm, hexadecanoic acid 16.67ppm, respectively.

• KSBB Journal
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• 제26권1호
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• pp.49-56
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• 2011

Volatile components of crude fucoidan and its raw material, Undaria pinnatifida sporophylls were identified by GC/MSD analysis, and the effects of a combined method of solvent extraction and drying (hot-air drying or spray drying) on deordorization of fucoidans were examined. The major components of seaweed smell (odor) in crude fucoidan and Undaria pinnatifida sporophylls were identified as alkanes (octadecane, heptadecane, tetradecane) and acids (hexadecanoic acid, oleic acid). Solvent extraction and drying were combined for the deordorization of fucoidans: hot-air drying/deordorization process (HDDP) and spray drying/deordorization process (SDDP). The deordorization effects of solvent extraction using solvents including water, ethanol, and acetone were investigated. Among the tested solvents, ethanol was selected as a deordorization solvent, because the seaweed smell and taste were mostly lowered by ethanol extraction followed by drying. In addition, HDDP and SDDP were compared, showing that SDDP gave higher sensory characteristics than HDDP. When the crude fucoidan was treated by ethanol extraction for 30 min followed by SDDP, approximately 60% of off-flavor components of crude fucoidan was removed based on GC/MSD peak area, and the total sugar and sulfate contents and APTT-anticoagulant activity significantly increased compared to crude fucoidan. In conclusion, SDDP after ethanol treatment was proposed and established as a deordorization process for fucoidan preparation.

• 한국식품영양과학회지
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• 제24권2호
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• pp.274-279
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• 1995

미더덕의 계절에 따른 성분 조성을 분석하여 식품학적 기초자료를 얻고자 3~10월 사이의 정미성분과 그 계절적 변화를 실험한 결과를 요약하면 다음과 같다. 미더덕의 총엑스분질소량은 6월에 294mg/100g, 7월에 160mg/100g으로 감소하다가 그 이후 증가하는 경향을 보였으며, 유리아미노산 중 taurine(45~50%)과 proline(12~18%)이 가장 많았으며, 그밖에 glutamic acid, alanine, glycine의 함량이 많았다. 핵산관련물질 중에서는 AMP의 함량이 가장 풍부하였고, glycine betain은 6월에 256mg/100g으로 최고치를 보였다. 미더덕의 엑스 분질소 조성은 유리아미노산이 50~62%로 가장 높았으며, 다음으로 betaine(11~15%), 핵산관련 물질(5~8%), TMAO 및 총 ceratinine 순이었다. 미더덕의 유기산은 succine, malic, lactic 및 pyroglutamic acid가 전체 유기산의 80% 이상을 차지하였으며, 그 중 succinic acid의 함량이 가장 높았다. Omission test한 결과, 미더덕의 맛은 유리아미노산, betaine, 핵산관련 물질, 불휘발성 유기산 순으로 영향을 미치는 것으로 나타났다.

• Asian-Australasian Journal of Animal Sciences
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• 제19권12호
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• pp.1728-1736
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• 2006

The effects of green tea (Camellia sinensis) waste silage and supplemental polyethylene glycol (PEG) on rumen fermentation and blood components were studied in cattle. Six Holstein steers were fed three diets in a 3${\times}$3 Latin square design, replicated twice. One diet was a control with no added silage, and the other two diets were supplemented (20% of the dry matter) with green tea waste silage either with (PEG) or without PEG (tea). Most of the fermentation parameters including major volatile fatty acids (VFA) were not affected by the diet treatments. The concentrations of high density lipoprotein cholesterol in the PEG group and urea nitrogen in the tea and PEG groups were greater than those in the control before morning feeding. The plasma 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid equivalent concentration was not different before morning feeding, but 3 h after morning feeding, its concentrations in both the tea and PEG groups were higher than in the control. Although the concentration of plasma vitamin A in the animals was not affected by feeding green tea waste silage, the concentrations of plasma vitamin E were significantly higher in the tea and PEG groups than in the control, both before and 3 h after morning feeding. The results from the present study suggest that feeding diets containing 20% of the dietary dry matter as green tea waste silage to Holstein steers has no negative impact on their ruminal fermentation, and increases their plasma antioxidative activity and concentration of vitamin E.

• 한국식품영양학회지
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• 제33권5호
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• pp.459-472
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• 2020

The purpose of this study was to evaluate the physicochemical components and antioxidant activities of wheat sprout powder prepared by the enzymatic hydrolysis and lactic acid bacteria treatment. The four kinds of pre-treatment were: no treatment (WP), treated with enzyme (WPE), treated with lactic acid bacteria (WPL), and treated with enzyme and lactic acid bacteria (WPEL) were applied to the wheat sprout powder. The WPEL had higher total free amino acid and essential amino acid content than the other samples. As for the volatile aroma of the wheat sprout powder, 29 types of compounds were identified in the WP and WPL, 28 types in the WPE, and 27 types in the WPEL, respectively. The total polyphenols and flavonoids contents, in the wheat sprout powder was enhanced with the enzyme and the lactic acid bacteria pre-treatment. The WPEL had highest DPPH radical scavenging activities. The overall acceptability was the highest at 6.24 points in the WPEL. Based on these observations, it was confirmed that the enzyme and lactic acid bacteria pre-treatment could improve the antioxidant activities and active component of the wheat sprout powder.

• 한국식품과학회지
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• 제21권6호
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• pp.749-754
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• 1989

탱자(Poncirus trifoliata)의 향기성분을 분석하기 위해 gas co-distillation 방법으로 정유를 추출한 후 GC/retention index(RI)와 GC/MS를 이용해 multi-dimensional analysis를 행하였다. Gas co-distillation 방법으로 탱자의 향도 그대로 지니며 기기분석에 적합한 정유를 얻을 수 있었다. 향기성분의 확인작업에는 GC/RI와 GC/MS를 상보적으로 사용한 multi-dimensional analysis가 효과적이었으며 GC/RI로만 확인할 경우 극성이 다른 두 가지 column을 사용해서 신뢰도를 높일 수 있었다. 탱자에 다량 함유되어 있는 향기성분들은 limonene, myrcene, ${\beta}-caryophllene,\;trans-{\beta}-ocimene,\;{\beta}-pinene$, 3-thujene, 7-geranyloxycoumarin 등으로 밝혀졌으며 확인된 30개의 성분 중 cis-3-hexenyl acetate, n-hexyl acetate, 2-methyl acetophenone, elixene 그리고 elemicine 등은 이제까지 감귤류에서는 발견되지 않았던 새로운 성분들이다.

• 한국식품과학회지
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• 제19권4호
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• pp.346-354
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• 1987

국내 mandarin감귤중 만생종으로 대표적인 임온주 및 청도품종과 valencia sweet orange의 향기성분을 capillary GC와 GC/MS에 의해 분석하여 mandarin으로부터 탄화수소류 11종, 알코올류 10종, 알데하이드류 4종, 에스테르 1종, 기타 5종등 31종을 확인 하였으며, sweet orange에서는 탄화수소류 12종, 알코올류 11종, 알데하이드류 8종, 에스테르 1종, 기타 5종등 37종을 확인 하였다. 이들 중 limonene이 62.63, 88.56%로 대부분을 차지하고 있으며 sweet orange에 23.93%나 많이 함유하고 있다. 이외 mandarin에는 octanal, terpineol, styrene, d-citronellol, farnesol, ${\alpha}-pinene$, ${\alpha}-terpinene$, e-cadiene, citronellal, cis-carveol등이 있고 sweet orange에는 myrcene, elemene, decanol, terpineol, terpinolene, linalool, d-citronell등이 있음을 확인하였다.

• 한국식품과학회지
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• 제19권4호
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• pp.361-365
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• 1987

유자의 이용성 확대를 위하여 유자원료와 유자차의 이화학적 특성, 향기성분 및 유자씨의 지방산조성을 분석하였다. 유자의 평균충량은 196g으로 이중 과즙이 18.8%, 씨 16.3%, 껍질 46.6%이고 과육이 28.3%였다. 유자원료의 당도는 $8.8^{\circ}\;Bx$, 산도 2.1%로 당산비율은 4.2이었고 유자차는 당도 $45^{\circ}\;Bx$, 산도 0.9%였다. 유자에는 fructose, glucose, sucrose가 각각 1.17%, 1.01%, 0.93% 함유되어 있으며 유자차에는 4.46%, 5.53%, 3.27%였다. 유자씨의 성분은 조지방 34.2%, 조단백 15.5% 함유되어 있고, 지방산은 palmitic acid 21.6%, stearic 3.1%, oleic 35.2%, linoleic 37.6%, linolenic이 2.6%였다. 유자의 향기성분은 limonene이 72.4%로 가장 많았으며 탄화수소류 17종, 알코올류 4종, 알데하이드 1종, 기타 6종을 포함 28종을 확인하였다.

• 한국식품저장유통학회지
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• 제6권4호
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• pp.469-474
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• 1999

국내에서 자생하고 있는 헛개나무 잎과 과병의 각종 화학성분을 분석한 결과 일반성분 중 잎의 경우 조단백질, 과병의 경우 총당이 높게 나타났으며, 무기성분은 잎과 과병에서 K, Ca, Mg, Na 및 Mn 순으로 나타났다. 비타민 C 함량은 잎의 경우 4.8 mg%, 과병은 3.8 mg%로 나타났으며, 유리당은 잎에서 fructose가 1.31%, 과병에서는 sucrose가 8.83%로 가장 높게 나타났다. 유기산은 잎과 과병에서 malic acid가 각각 1,715 mg%와 439.18 mg%로 가장 높게 나타났으며, 구성아미노산은 잎에서 glutamic acid가 497.99mg%, 과병에서는 proline이 751.78 mg%로 가장 높게 나타났다. 지방산은 잎의 경우 불포화지방산인 linolenicacid가 43.54%, 과병은 포화지방산인 palmitic acid가 23.15%로 높게 나타났으며, 향기성분은 잎에서 trans-geraniol이 124.36 ppm, 과병에서는 isobutyric acid가 292.67 ppm으로 가장 많이 함유되어 있었다.