• Food Science and Preservation
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• v.15 no.2
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• pp.269-273
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• 2008

In this study, we investigated changes of general components and biological activity of the fruit of Prunus mume. The average moisture content of the fruit ranged from 88.34-90.04%. Crude protein and crude fat contents were not significantly different among samples. During ripening, crude protein decreased and crude fat increased. The level of polyphenols in the fruit gradually increased during ripening. An antimicrobial activity test indicated that methanol extracts had the highest activity and that the antimicrobial activity increased gradually with harvest time. Antimicrobial substances in methanol extracts of the fruit maintained their activity after heating at $100^{\circ}C$ for 30 minutes and were unaffected by changes in pH. The antioxidant activities of extracts isolated with different solvents were: methanol> ethylacetate > water> ether> hexane. Antioxidant activity was not significantly different for different harvest times. The antioxidant index of the methanol extract was also the highest in electron donating activity.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.183-187
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• 2004

본 연구는 최근 위해성의 논란이 되고 있는 육가공 첨가제인 아질산염을 대체할 수 있는 기술을 제시하기 위해 시행되었으며, 이를 위해 천연추출물인 파프리카와 매실 추출물을 육포에 첨가하여 미생물 사멸을 위해 감마선 및 전자선을 처리하였다. 그 결과 아질산염을 첨가하지 않고 상기 기술들로 현재 시판되는 육포와 유사한 지질 산패도, 색도, 조직감을 유지할 수 있었으며, 특히 10 kGy 조사에 의해 곰팡이 및 효모를 비롯한 총 호기성 미생물이 효과적으로 사멸되어 육포의 저장성과 안전성을 확보할 수 있었다.

• Food Science and Preservation
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• v.11 no.1
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• pp.17-21
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• 2004

The antimicrobial effect of mixed solution of botanical antimicrobial agent-citrus product (BAAC) and such a natural additive as aloe, ginseng or Prunus mume extract on the spoilage microorganisms of soybean sprouts were investigated by paper disk method. The mixture (BAAG) of BAAC and ginseng extract showed the remarkable antimicrobial activity in the result of the experiment. Therefore, we used BAAG as pre-soaking and cultivating solution of soybean sprouts. Total bacterial and Escherichia coli cell count of soybean sprouts pre-soaked and cultivated in the BAAG-diluted solution (50 ppm) showed 2.5 ${\times}$ 10 CFU/mL and 1.3 ${\times}$ 10 cfu/mL in comparison with 3.5 ${\times}$ 10$^3$ cfu/mL and 5.8 ${\times}$ 10$^3$ cfu/mL of the control, respectively. BAAG-treated soybean sprouts also showed no slimy brown product and undesirable odor characterized in the control. It was confirmed that BAAG could be a proper pre-soaking and cultivating solution of soybean sprouts.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.1
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• pp.21-26
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• 1990

The aim of this study is to investigate effects of Prunus mume extract on gastric secretion in rats and experimentally carbon tetrachloride-induced liver damage of rabbits. The groups of Prunus mume extract showed excellent increasing effect in total acidity and peptic activity and decreasing effect on gastric volume than the control group whereas clear differences were not found between sample adminstered group and control group in gastric pH. In liver function test Prunus mume extract exhibited rapid recuperation of liver function that is sGPT activity showed an apparant decreasing effect from the 6th day total cholesterol and alkaline phosphatase level from the 10th day respectively compared to the control group in carbon tetrachloride-intoxicated rabbits. It is, is suggested that Pruns mume extract can be used as the stomachics to promote the gastric digestion by increasing the peptic activity and health food to shorten the recovery time from liver diseases.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.8
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• pp.1107-1112
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• 2011

Over-consumption of alcohol leads to many side-effects such as malnutrition, liver disease, and neuronal disorders and many investigators have tired to identify methods for preventing the side-effects of drinking. In this study, we demonstrated the protective effect of a new food component, SAC-1, containing Hovenia dulcis Thumb and Lonicera caerulea Thumb extract against the side-effects of drinking. We observed that blood alcohol concentration, glutamic oxaloacetate transaminase, lipid peroxidation, and total glutathione level decreased significantly in plasma and liver of mice fed the SAC-1 extract before alcohol intoxication. In particular, SAC-1 had more of a protective effect than that of Hovenia dulcis Thumb extract alone. These results suggest that SAC-1 should further be developed to treat alcohol detoxification and stimulate antioxidative potentials.

• Korean Journal of Food Science and Technology
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• v.51 no.2
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• pp.169-175
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• 2019

This study was carried out to produce the health functional food maesil cheong by replacing sucrose with isomaltooligosaccharide and fructooligosaccharide. The substitution levels of these oligosaccharides were between 10% and 100%. A 1:1 (w/w) mixture of maesil and sugar was adopted for preparing maesil cheong. The pH of maesil cheong remained unchanged (between 2.72 and 3.00) during 90-day storage period, regardless of oligosaccharide content. Citric and malic acids were identified in maesil cheong; citric acid accounted for 71-82% of the total organic acid content. Sucrose was completely liquefied in the sample after 30 days and was hydrolyzed steadily into fructose and glucose over the storage period. More than 75% of isomaltooligosaccharides remained in maesil cheong after 90 days when sucrose was completely replaced with isomaltooligosaccharide. However, fructooligosaccharides were mostly decomposed at the end of storage period. Thus, isomaltooligosaccharides may be suitable for acidic maesil cheong products to expect its health functional effect.

• Korean Journal of Food Science and Technology
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• v.35 no.5
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• pp.893-897
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• 2003

Prunus mume and Schizandra chinenis H-20 were found to have antibacterial properties against B. subtilis, S. aureus, E. coli KCCM 11591, and P. aeruginosa KCTC 1750. Prunus mume and S. chinenis H-20 showed clear zones of $6{\sim}10\;mm$ for the microbes used, while jujube, Lycii fructus and pine needle showed clear zones of $0.1{\sim}1\;mm$. In the experiment on DNA action, S. chinenis H-20 completely inhibited the growth of B. subtilis, S. aureus, and E. coli KCCM 11591 in the beginning of cultivation and even when added 5 hr after initiating cultivation. Moreover, as the microbes of about $l0^8$ cfu were shown by this test to have strong antibacterial power, they will most likely have an effect in vivo. Prunus mume and S. chinenis H-20 extracts were added to kochujang and fermented at $30^{\circ}C$ for 35 days. Prunus mume kochujang showed a sensory score of 4.29 (somewhat good), suggesting that Prunus mume can he utilized as a functional food ingredient.

• Journal of Life Science
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• v.31 no.2
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• pp.149-157
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• 2021

Prunus mume Sieb. et Zucc is widely distributed in East Asia (Korea, Japan, and China), and its fruit is often used as a medication and food material. However, because most previous studies have only investigated the state of Prunus mume fruit extract, studies on the various ways of processing this extract are still needed to increase its utilization. In this study, we evaluated the physicochemical properties and physiological activities of spray-dried Prunus mume vinegar powder (SPP). The sugar content, pH, total acidity, and moisture content of the SPP were 8.90 °Brix, 3.19, 1.05%, and 3.07%, respectively. The SPP exhibited significantly high antioxidant activity in terms of DPPH radical scavenging activity (65.55%), reducing power (1.48), and hydrogen peroxide scavenging activity (48.07%). In addition, the SPP remarkably decreased the cell viability of human breast MDA-MB-231 and human skin cancer SK-MEL-28 in a dose-dependent manner. The morphological results of the treatment of MDA-MB-231 cells with SPP were distorted, shrunken cell masses. Furthermore, apoptotic bodies and nuclear condensation formed in the SPP-treated MDA-MB-231 cells. The total polyphenol and flavonoid contents of the SPP were 59.58 ㎍/g (gallic acid equivalent) and 57.56 ㎍/g (quercetin equivalent). The results of this study indicate that SPP, which has antioxidant activity and anticancer effects, can be useful in the development of natural medicines and functional food ingredients.

• Korean Journal of Poultry Science
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• v.39 no.2
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• pp.121-131
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• 2012

To investigate the effect of dietary supplementation of freeze-dried plum (Prunus mume Siebold and Zucc., PMS) or omija meal (Schizandra chinensis Baill.; SCB) on growth performance, organ weights, blood biochemical profiles and antioxidant defense system, a total of 96, 3-day-old male broiler chickens were assigned to three dietary groups: (1) control diet, (2) control diet supplemented with PMS at 0.2%, (3) control diet supplemented with SCB at 0.2%. In vitro antioxidant activity, plum and omija extracts showed a significantly higher radical scavenging activity (RSA). In particular, omija extract showed much higher RSA than plum extract. Dietary addition of plum or omija did not affect body weight, feed intake, feed conversion and the relative weight of digestive organ in birds. Plasma triglyceride significantly (P<0.05) increased in birds fed the diet supplemented with omija compared with those fed control diet without affecting the other blood biochemical components. Furthermore, reduced form of glutathione (GSH) in the liver or muscle significantly (P<0.05) increased in birds fed the diet fortified with plum and omija. However, the specific activities of superoxide dismutase (SOD), glutathione peroxidase (GPX) and glutathione-S-transferase (GST) and MDA (malondealdehyde) in the intestine, liver and muscle were not altered by dietary antioxidant sources. In conclusion, dietary plum and omija resulted in a positive effect on some antioxidant indicators such as increased in vitro RAS in extracts and in vivo GSH level in the liver and muscle without affecting growth performance. Therefore, dietary addition of 0.2% of plum or omija could be applicable as potential antioxidant sources in broiler chick production.

• Journal of the Korean Society of Food Science and Nutrition
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• v.16 no.3
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• pp.41-47
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• 1987

These studies were conducted to investigate effects of Prunus mume extract on experimentally alloxan-induced diabetes in rabbites, antibacterial activity and acute toxicity in mice ; 1. $LD_{50}$ of Prunus mume extract(P.M.E.) was 15.25g/kg intraperitoneally in mice. 2. P.M.E. showed more significant recuperative effect compared to the control group in alloxan-induced diabetes of rabbits. 1) P.M.E. 800mg/kg bodyweight exhibited more excellent hypoglycemic effect afte 6 days and adjacent to the normal level at 14th day. 2) SGPT activity was significantly decreased after 6 days, and the blood levels of total cholesterol and urea-nitrogen were significant in 800mg/kg at 6 days and 10 days respectively. 3. In antibacterial activity test P.M.E. was active at 0.195mg/kg in Staphyllococcus aureus, 3.125mg/ml in E. coli, Enterobacter cloacae, Klebsiella oxytoca, and in Pseudomonas aeruginosa at 0.391mg/ml. 4. In histological findings, the sample groups were deeply stained, fully granulated and partial degranulation of ${\beta}-cells$, and a few vacuolar and vesicular changes of cytoplasm than alloxan treated group in proportion to the sample amounts.