• Plant Resources
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• v.8 no.3
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• pp.188-193
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• 2005

In order to discern the possibility of functional food product or ingredient of a new medicine, the leaf parts and fruit parts of Prunus mume was partitioned with various solvents and their antioxidative activity was measured. When the antioxidative activity of MeOH extracts of leaf parts and fruit parts of Korea and China was compared, all of them showed the highest antioxidative activity in EtOAc fraction. In case of Korean Prunus mume leaf parts showed that quantity required for $RC_{50}$ to be $27.04{\mu}g$ in EtOAc fraction and in case of China Prunus mume leaf parts, it was $23.31\;{\mu}g$ which is similar to that of ${\alpha}$-tocopherol ($22.14\;{\mu}g$) and showed the highest activation. In case of Prunus mume fruit parts MeOH extract, Korean fruit showed $29.16\;{\mu}g$, and Chinese fruit showed $31.21\;{\mu}g$ in EtOAc fraction and thus Korean fruit extract showed a higher activity of antioxidant than the Chines fruit extract. When the antioxidative activity between the fruit parts and leaf parts of Prunus mume was compared, the leaf parts showed a higher antioxidative activity.

• Journal of Life Science
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• v.22 no.7
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• pp.936-942
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• 2012

Prunus mume has been traditionally used as a medicinal food in Korea, Japan, and China. In particular, this fruit has been reported to have beneficial biological effects on gastritis and gastric ulcers. However, its action in relation to skin whitening has remained unclear. Accordingly, the effects of fruit extract of P. mume related to antioxidation and skin whitening were examined in this study. First, using the MTT assay, it was observed that fruit extract of P. mume below 0.1% has no cytotoxicity in B16-F1 cells as a result of cell viability. Second, the direct scavenging effects and the reducing power of the fruit extract of P. mume were evaluated in vitro on DPPH radicals, hydrogen peroxide, and superoxide. It exhibited high reducing power and scavenging activity on the aforementioned reactive oxygen species. Furthermore, we found that its protective effect against genomic DNA damage related to oxidative stress was increased in a dose-dependent manner. In addition, the fruit extract of P. mume had an inhibitory effect on melanin production induced by L-dopa. In addition, it reduced the expression level of NRF-2, SOD-1, and SOD-2 related to antioxidation in western blot analysis. These results suggest that fruit extract of P. mume could exert a whitening effect through inhibition of melanin production by its antioxidant effect.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2005.09b
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• pp.17-26
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• 2005

The antioxidant properties of methanolic extracts from the fruit of Prunus mume were determined in chicken breast meat systems. When P. mume extract (PM) was added to chicken breast meat, 2-thiobarbituric acid-reactive substances (TBARS) value at Day 3 was decreased by about $45\%$ of the control. PM did not affect color of chicken meat compared to the control. The amounts of volatile aldehydes and hydrocarbons were significantly decreased by the addition of PH. Especially, hexanal was the most predominant volatile compound in the control taking up almost more than $50\%$ of the total volatiles, and PM reduced the amount into $26\%$ of the control meat at 3 days.

• Proceedings of the Korean Society of Life Science Conference
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• 2006.09a
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• pp.85.1-85.1
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• 2006

• Food Science and Preservation
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• v.21 no.5
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• pp.652-660
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• 2014

To maintain the microbiological safety of Prunus mume fruit before it is processed, it was treated with a combination of 0.5% citric acid and 0.1% Tween 20, and stored at $4{\pm}1^{\circ}C$ for seven days. The combined treatment reduced total aerobic bacteria, yeast, and mold populations in the fruit by 2.20 and 1.70 log CFU/g, respectively, compared to those in the control. Organic acid contents and the Hunter $L^*$, $a^*$, and $b^*$ values were not affected by the treatment during the storage. In addition, the dried Prunus mume fruit prepared with 40% red algae extract (RAE) or maltodextrin (MD) treatment and hot-air drying were compared with respect to the fruit's physicochemical properties such as color, total phenolic and flavonoid content, and microstructure. The hot-air dried samples had undesirable color changes and inferior textures. The RAE-treated samples had a higher total phenolic content (225.15 mg gallic acid equivalent (GAE)/100 g) and total flavonoid content (49.25 mg quercetin equivalent (QE)/100 g) than the other treatments. The treatment of Prunus mume fruit with RAE can provide better-dried products than can MD treatment or hot-air drying. These results suggest that the combined treatment with citric acid and Tween 20 can be effective in preserving the microbiological safety of Prunus mume fruit, and its dehydration using RAE is an efficient drying method.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.7
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• pp.970-974
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• 2012

Prunus mume is said to aid in the recovery of fatigue and improvement of liver and stomach functions. To obtain the best benefits of the whole fruit, fresh green Prunus mume was de-seeded and the fruit pulp was vacuum dried. The vacuum-dried pulp was powdered and sieved through a 250 ${\mu}m$ sieve. Then the sieved green Prunus mume powder (GPP) was granulated with water (GPPGW) and with Prunus mume extract (GPPGE) with a fluid bed coater. The physicochemical and sensory properties of GPP, GPPGW, and GPPGE were then evaluated. As a result, the water dispersibility (dispersible time) of GPP, GPPGW, and GPPGE was 21.19 sec, 6.46 sec, and 4.85 sec, respectively. The powder fluency (angle of repose) of GPP, GPPGW, and GPPGE was $11.25^{\circ}$, $8.65^{\circ}$, and $9.52^{\circ}$, respectively. The overall consumer acceptance of GPP, GPPGW, and GPPGE was 3.50, 4.62 and 5.00, respectively. Inconclusion, Prunus mume can be used as granulated whole fruit pulp with good powder fluency and dispersibility.

• The Korean Journal of Pesticide Science
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• v.14 no.4
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• pp.394-400
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• 2010

Insecticidal activities of methanol extracts of the different parts of Prunus mume were investigated against the larvae of Cnaphalocrocis medinalis (C. medinalis) by topical application. The mortalities of the larvae of C. medinalis were 34% at the concentration of 4,000 ppm, 36% of 8,000 ppm, 40% of 16,000 ppm and 58% of 32,000 ppm of the extracts from the fruits, and 38% of 4,000 ppm, 45% of 8,000 ppm, 58% of 16,000 ppm and 75% of 32,000 ppm from the stem + flower of Prunus mume (P. mume), respectively. The rates of pupation of C. medinalis treated with either fruit or stem+flower were gradually low according to the concentration of extracts increased. The weight of pupae of C. medinalis has no significantly different in between the control and the treated groups of the extracts from both of fruit and stem+flower. However, the differences of the pupal weight and the rate of pupation of C. medinalis treated with the extracts from the stem+flower and fruit of P. mume were significant as the level of 56% ($R^2$=0.56363, P=0.4364). Both of stem+flower and fruit extracts of P. mume showed good effects of anti-feeding against C. medinalis. The extracts of the stem+flower of P. mume could be advocated for developing as birational agent for the control of C. medinalis.

• 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.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.10
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• pp.1409-1416
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• 2012

This study examined the effects of four herbal sports drinks containing Prunus mume, Liriope platyphylla, and Acanthopanax senticosus fruit extracts on body fat and endurance of rats trained by a progressive loaded exercise program. Forty male Sprague-Dawley rats (6 weeks old) were divided into five groups and fed experimental diets for 6 weeks according to the following protocol: C, exercise-trained control group (n=8); A, exercise group with Acanthopanax senticosus extract (n=8); L, exercise group with Liriope platyphylla extract (n=8); PA, exercise group with Prunus mune fruit extract plus Acanthopanax senticosus extract (n=8); PL, exercise group with Prunus mune fruit extract plus Liriope platyphylla extract (n=8). Endurance was measured by a progressive loaded exercise test using a treadmill. PA and PL supplementation significantly extended time to exhaustion compared to the control group (p<0.05). Further, the four herbal sports drinks all significantly reduced epididymal and interscapular white adipose tissue weights compared to the control group (p<0.05). Plasma triglyceride concentration was significantly lower in the A group compared to the control group. Plasma free fatty acid concentration was higher in the A group compared to the control group. On the other hand, Acanthopanax senticosus fruit extract supplementation tended to reduce the plasma glucose concentration compared to the control group. PA and PL supplementation significantly increased gastrocnemius muscle LDH activities compared to the control group (p<0.05). These results show that sports drink containing Acanthopanax senticosus improved endurance capacity, plasma lipids, and glucose concentrations. Sports drink with Prunus mume and Liriope platyphylla or Acanthopanax senticosus was synergistically improved endurance.

• 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.