• 한국식품저장유통학회지
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• 제3권2호
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• pp.121-129
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• 1996

Plum highlighted as a health food is needed to diversify the processed products because labor storage is big problem since the fruit was producted massively in June. The Plum was extracted by the pressing type extractor after washing, drying and removing the seed by seed separator. The crude extract was concentrated with stainless steel vessel at different temperature and stirring speed. This study was obtained as follows. The sugar content of fresh plum concentrated extract was 55.3~58.3$^{\circ}$Brix, and of the freezing plum concentrated extract was 75.5~70.3$^{\circ}$Brix. In color difference, the freezing plum concentrated extract was more deep black than fresh plum. In change patten of pH, it was decreased as concentration was proceed. The final pH was 2.3~2.2 in fresh plum, and 1.8~2.2 in freezing plum. The total acid content of fresh plum concentrated extract and the freezing plum was 45.4~47.8, 60.3~60.9%, respectively. The content of evaporation at 85$\pm$5$^{\circ}C$ was constant irrespective of stirring speed. The yield of extraction of fresh plum was higher than freezing plum. According to this results, the use of stainless vessel, 50rpm, which gave a highly qualified plum concentrated extract.

• Journal of Applied Biological Chemistry
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• 제56권1호
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• pp.19-22
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• 2013

Plum (Prunus salicina L.) slices were dehydrated with red algae extract (RAE) at a concentration of 30% (w/w), and the dried samples were compared with maltodextrin (MD)-treated and hot-air dried samples in terms of physicochemical properties such as rehydration ratio, ascorbic acid, microstructure, and color. The rehydration ratios and colors of RAE-treated plum slices were better than those of MD-treated and hot-air dried samples. The ascorbic acid contents of RAE-treated samples were higher and their microstructures were finer than those of MD-treated or hot-air dried samples. These results suggest that plum slices can be dehydrated with RAE without loss of quality.

• 동아시아식생활학회지
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• 제10권1호
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• pp.37-41
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• 2000

Physiocheical properties and chemical compositions of two plums(Oishiwase, Formosa ) produced in Kimcheon area were investigated . Chemical compositions of two plum cultivars were similar except nitrogen free extract(NFE) . NFE value of Formosa was higher than Oishiwase . Alcohol insoluble substance content, total soluble pectin, total sugar content and total organic acid content of Oishiwase were 2.08%, 14.16%, 5.07% and 949.16mg%, respectively. In case of Formosa cultivar, those were 50%, 15.42%, 5.91% and 985.91mg%, respectively. Fructose content among free sugars of two plum cultivars range from 3.97-3.45% and the other were glucose, sucrose and inositol, 1.83-1.53%, 0.08-0.05% and 0.04-0.03%, respectively. Malic acid content was 35-373mg% and others were levulinic acid, lactic acid, citric acid, succinic acid and fumaric acid in the decreasing order.

• 한국식품저장유통학회지
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• 제18권3호
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• pp.335-340
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• 2011

진주담치에 기본양념, 데리야끼 양념과 매실양념으로 제조한 젓갈 3종의 일반성분을 분석하여 비교한 결과 수분과 조단백은 데리야끼 양념, 회분은 기본양념, 조지방은 매실 양념이 다소 높았다. 식염함량은 기본양념이 가장 낮게 나타났다. 아미노산을 분석한 결과 구성 아미노산 중 glutamic acid가 모든 시료에서 가장 높은 함량을 보였으며, 총 아미노산 함량의 경우 기본양념 젓갈이 9,169.48 mg/100 g으로 가장 높았다. 주요 지방산은 포화지방산의 주체를 이룬 C16:0 (palmitic acid)가 대부분 많은 함량분포를 보였으며 첨가한 양념에 따라 지방산 조성에 따른 함량이 다소 달라지는 것을 알 수 있었다. 시료별 관능검사는 모든 측정 항목에서 매설양념과 데리야끼 양념 젓갈에서 높은 점수를 받았으며, 유의성은 없는 것으로 나타났다.

• 한국식품영양학회지
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• 제7권2호
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• pp.114-118
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• 1994

In order to compare the contents of nucleic acid substances in various wines, the contents of nueleic acids were analyzed by HPLC. The contents of cytosine was found to decrease in the order of cherry wine > plum wine > dongdongju > chungha > pineapple wine > soju. The contents of guanine was found to decrease in the order of dongdonglu > chungha > pineapple wine > cherry wine > plum wine > soju. The contents of uridine was found to decrease in the order of dongdongju > chungha> cherry wine > pineapple wine > plum wine > soju. The contents of adenine was found to decrease in the order of dongdonglu > chungha > cherry wine > pineapple wine > plum wine > solu. The contents of guan oslne was found to decrease in the order of dongdongju > cherry wine > chungha > plum wine > pine-apple wine > soju. The contents of adenosine was found to decrease in the order of dongdongju > shun aha > cherry wine > plum me > pineapple wine > soju.

• 한국식품저장유통학회지
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• 제3권2호
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• pp.131-136
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• 1996

Even though plum is well known as a health food, the available processed food of it is quite limited. Furthermore it is difficult to find an easy processing method for leading to a value added product at farmhouse. This study was investigated to effects of temperature for plum extract juice by osmosis of yellow sugar. The plum was mixed with yellow sugar at equal ratio(w/w) to obtain yellowish extracted plum juice and then located in incubator at 15, 25, 35$^{\circ}C$, respectively. The sugar content of extract was high at the early period but decreased throughout extraction period and it was about 66.1~67.4$^{\circ}$Brix. The color difference was increased yellowish throughout the extract period. The pH of it was decreased throughout extract processing but citric acid content was increased. The speed of extraction during extraction processing was more rapid at 15$^{\circ}C$ than 3$0^{\circ}C$. However sensory evaluation score of taste and flavour was obtained at 15$^{\circ}C$ than 3$0^{\circ}C$, so the prefer temperature for plum extract juice by osmosis of yellowish sugar was 15~2$0^{\circ}C$.

• 한국식품저장유통학회지
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• 제3권2호
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• pp.155-170
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• 1996

In order to determine the physiolosical characteristics of plum fruits(Oishi wase) during maturation and guilty according to temperature after harvest, (2-chloroethyl) phosphonic acid(ethphon) 390ppm was sprayed on plum tree 11days before commercial matuarity in Suwon area. And also this study was acted to investigate fruits quility(Formosa) influenced by temperature(room, low) and polyethylene films(0.03, 0.06, 0.1mm), 1. Effect of ethphon on the fruits maturation and fruits(Oishi wase) quility according to temperature ofter harvest. Ethephon stimulated fruits ripening but the firmness was reduced rapidly. Soluble solids and titratable acidity was not very different than each treatment. Carbon dioxide and ethylene production were advanced and the production peak were shown earlier by ethephon treatment as compared with control fruit. Anthocyanin development was enhansed rapidly by ethephon treatment but it exerted a bad influence on fruits color after harvest, The soluble sugars in fluits were mainly glucose, sucrose, and fructose. Those content were higher in treated fruit than control. The organic acid was mainly malic acid. The shelf life was less than about 5days at room temperature and about 10 days at low temperature. 2. Fruits(Formosa) quility as affected by polyethylene film bagging. The polyethylene films well maintained the firmness both room and low temperature. Low temperature was more effective in maintaining titratable acidity than room temperature, especially polyethylene films. On the Other hand, soluble solids content was not shown wide differance between room and low temperature. Polyethylene film showed a high resperation rate, the rate was higher at room temperature than low temperature and thicker films revealed higher rate. Otherwise, ethylene production was low in all treatment Polyethylene film inhibited the coloration of fruits, decreased anthocyanin content. Fruits coloration delayed by low temperature in control. The shelf life of plum fruits was about 6 days at room temperature and 13 days at low temperature in control Polyethylene film had no advantage on shelf life both at room and low temperature.

• Applied Biological Chemistry
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• 제45권3호
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• pp.134-137
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• 2002

자두 후무사(포마사)와 대석조생 품종의 일반성분 및 이화학적 성분을 조사하였다. 일반성분으로 후무사와 대석조생의 조지방과 가용성무질소물은 약간의 차이가 있었고 수분, 조단백, 조섬유와 조회분은 비슷하게 나타났다. 식이섬유의 함량은 품종간에 차이를 보이지 않았고, 가용성과 불용성 식이섬유의 비율이 유사한 것으로 확인되었다. 자두의 무기질 총 함량은 후무사가 30 mg%, 대석조생이 17.99 mg%로 후무사가 조금 많았고, 주된 무기질은 황(5), 칼륨(K), 마그네슘(Mg) 순이었다. 유리당 중 후무사는 fructose의 함량이 높았고, 대석조생이 sucrose의 함량이 가장 높았다. 유기산의 총함량은 대석조생이 높았으며, 과육에 있어서 주된 유기산은 malic acid였고, 과피에 있어서는 후무사는 citric acid, 대석조생종은 malic acid가 주된 유기산이었다. 유리아미노산은 두 품종 모두, glutamic acid, alanine, ${\gamma}-aminoisobutyric$ acid, serine의 순으로 높은 함량을 보였으며, 총 아미노산 함량은 두 품종이 비슷하였다.

• 한국식품과학회지
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• 제4권1호
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• pp.36-43
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• 1972

여름철 즐겨먹는 토마토, 수박, 참외, 복숭아, 자두중(中)의 유리(遊離) amino 산(酸) 및 당(糖)을 Amino acid Autoanalyzer와 thin layer chromatography에 의해 분석(分析) 조사(調査)한 결과(結果)는 다음과 같다. 1) 과즙중(果汁中)에서 동정(同定)된 amino산(酸) 종류(種類)로는 aspartic acid, glutamic acid, alanine, serine, asparagine, lysine, valine, glycine, methionine, histidine, thereonine, leucine, isoleucine, proline, arginine의 15개(個)였고 그밖에 1개(個)의 unknown이 발견 되었다. 2) 토마토, 복숭아, 자두 중(中)에는 10개(個)의 amino산(酸)이 수박과 참외(가식부(可食部))중(中)에는 13개(個)의 amino산(酸)이, 그리고 참외(과피부(果皮部))에는 11개(個)의 amino산(酸)이 함유(含有)되었다. 3) 일반적(一般的)으로 이러한 amino산(酸)들은 소량이지만 골고루 함유(含有) 되었다. 4) 토마토에는 glutamic acid와 aspartic acid가 가장 많이 함유(含有)되었고, 수박에는 asparagine과 lysine이, 참외에는 alanine, serine, aspartic acid가 그리고 복숭아와 자두에는 aspartic acid와 serine이 가장 많이 함유(含有)되었다. 5) 과즙중(果汁中) 유리당(遊離糖)은 다같이 glucose, fructose, sucrose, maltose의 4개(個)가 함유(含有)되었고 그중(中) glucose와 fructose는 다량(多量)이고 sucrose, maltose는 소량(少量)이었다.

• 보존과학회지
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• 제33권2호
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• pp.107-120
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• 2017

경주 월지에서 출토된 금동삼존판불을 복원하고자 고문헌에 공통적으로 기록되어 있는 매실산을 도금 실험에 적용하였으며 도금 결과를 색도, SEM-EDS, XPS 등의 분석을 통해 알아보았다. 색도 분석결과 전체적으로 황색도가 높았으며 10분 이상 매실산 처리를 한 시편이 명도가 높았다. SEM으로 표면을 관찰한 결과 아말감을 도포하고 바로 소성한 경우 도금이 거의 되지 않았으며 36시간 방치 후 소성한 경우 도금층이 불균일하게 관찰되었으므로 도금시간은 12시간~24시간 이내가 적절함을 확인할 수 있었다. EDS로 도금층의 성분을 분석한 결과 산처리 시간이 20분인 시료의 경우 5 wt.% 내외로 수은의 비율이 다른 시료에 비해 낮았다. 또한 XPS로 표면상태를 분석한 결과 산처리시간은 20분이고 24시간동안 아말감을 도포한 시료가 Au의 XPS peak 분해능이 높으며, Hg가 다른 시편들에 비해 거의 남아 있지 않음을 확인할 수 있었다. 즉, 매실산을 이용한 실험 및 분석결과 산처리 시간이 20분이고 아말감 도포시간이 24시간일 때 도금이 잘 되는 것으로 확인하였고, 이 결과를 토대로 금동삼존판불을 복원하였다.