• Food Science of Animal Resources
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• v.22 no.1
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• pp.77-80
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• 2002

The studies was conducted to investigate the antioxidation effect of Korean propolis. Oxidation period of soy oil was 17.5 hr, soy oil with propolis(1,000 ppm) was extended the length of oxidation period. The length of oxidation periods of soy oil with Yecheon, Youngwol, Brazilian, Chinese, and Australian propolis were 33.5, 35.4, 32.0, 33.1, and 27.1hours respectively. The length of oxidation period of lard with propolis 1,000ppm of Yecheon, Youngwol, Brazilian, Chinese and Australian were 191, 167, 296, 230, and 207hours, respectively compared to control(22.5hours). When compared to tocopherol as natural antioxidant and BHT as synthetic antioxidant were revealed 16.7 and 20.5hours, respectively. The length of oxidation period was not different when compared to tocopherol and Youngwol propolis with soy oil. Ascorbic acid and citric acid had synergistic effect to propolis with soy oil when 200ppm of propolis was added.

• International Journal of Industrial Entomology and Biomaterials
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• v.19 no.1
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• pp.193-197
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• 2009

We report an evaluation of the immunostimulatory effect of propolis volatiles from a stingless honeybee. We studied 34 elderly residents at a special nursing home. Twenty-one subjects were treated with propolis, 8 with $Binch\hat{o}$ charcoal and 5 subjects acted as controls. Subjects treated with either propolis or Bincho charcoal were housed in rooms separated from the other non-study residents in the nursing home. The effects of each treatment on natural killer (NK) cell activity and lymphocyte levels were examined after 2 months and then for a longer period. The results indicated that NK cell activity was significantly improved to that within the normal range only after propolis treatment.

• Preventive Nutrition and Food Science
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• v.5 no.1
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• pp.54-57
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• 2000

This study was designed to observe the anticancer activity of propolis on human rectal (HRT-18) and human colon (HCT-48) cancer cell lines in vitro, and on sarcoma-180 cells in vitro. The proliferation of HRT-18 and HCT-48 cancer cell lines was potently inhibited in proportion to the concentration of propolis. The survival time of the mice inoculated with sarcoma-180 cells was increased modestly by the administration of propolis compared to the control. Those observations suggest that propolis has anticancer effects against some of the cancer cell lines in vitro and in in vitro.

• Korean journal of food and cookery science
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• v.22 no.6 s.96
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• pp.905-913
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• 2006

The properties of water soluble powder of propolis(WSP), made with different levels(0, 20, 40, 60, 80%) of ethanol extract of propolis(EEP) and hydrocolloid were investigated, along with the quality changes of its bread after 7 days' of storage at $30^{\circ}C$ The yield of WSP containing 40% EEP treated at $160^{\circ}C$ was the highest at 59.3% and the brown color of all the powders tended to be darkened with increasing EEP content. The turbidity of WSP treated at higher temperature was decreased in its aqueous solution (10%, w/w), and this was considered to be due to the presence of minute nonsoluble particles. Antioxidative activities determined by DPPH(1,1-diphenyl-2-picrylhydrazyl) were the lowest in WSP treated at $140^{\circ}C$, while those of the WSP samples prepared at 160 and $180^{\circ}C$ were as high as that of WSP containing more than 40% EEP, regardless of EEP concentration. The propolis breads with added WSP made at $160^{\circ}C$ were selected as the most desirable powder for subsequent study. Bread with WSP40 was the heaviest while the volume loss of WSP80 was the greast after baking. The moisture contents of the propolis bread were drastically decreased until 3 days' of storage, but it was thought that WSP might be ineffective for the prevention of moisture loss. The pH of breads without EEP was decreased after 3 days' of storage, while that of the WSP breads remained almost unchanged until 5 days' of storage. Total bacterial counts also exhibited decay levels during the storage. In conclusion, water soluble powder of propolis is useful as a natural antioxidative and antibacterial material in various types of food.

• Journal of Korean society of Dental Hygiene
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• v.15 no.2
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• pp.319-324
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• 2015

Objectives: The purpose of this study was to verify the oral environmental change in using the natural oral cleaner containing propolis and prevention effect of oral disease. Methods: The subjects were 60 university students in Gangwon province. The groups consisted of 30 students of experimental group and 30 students of control group. The subjects were those who did not take the antipsychotic, diuretic, antihistamine, and anesthetic. The students rinsed their mouth with propolis mixture of oral cleanser for 4 weeks after receiving informed consent from October 1 to November 2, 2012. Collected saliva was measured for amount, salivary consistency, pH, plague index, gingival index, and halitosis. Results: The amount of salivary in propolis mixture of oral cleansing group remarkably increased (t=2.16, p<0.05). pH was alkaline in the group with oral cleaner containing the propolis (t=2.80, p<0.01). The bad breath remarkably decreased in the group with oral cleaner containing the propolis (t=-5.77, p<0.001). Conclusions: The use of the oral cleaner containing the propolis increased the amount of salivary and pH. The use of oral cleaner containing the propolis reduces halitosis and maintains good quality of oral hygiene.

• Journal of Life Science
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• v.31 no.7
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• pp.686-697
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• 2021

Propolis is a resinous substance produced by honeybees, which they use to protect their hives. Honeybees produce propolis by mixing exudates from the various trees and plants with saliva and beeswax. It has been used since around 300 B.C. as a folk medicine to cure wounds. Propolis contains many physiologically active components, such as flavonoids, phenolic compounds, and beeswax. Because of its functional components, propolis has a wide spectrum of biological applications. The compounds in propolis and its biological activity can vary according to the location of nectar source and extraction method. Propolis is most commonly known for its anti-microorganism activity against bacteria, viruses, and fungi. Artepillin C and caffeic acid phenethyl ester (CAPE) have been identified as regulatory compounds that reduce inflammation and exert immunosuppressive reactions on T lymphocytes. Through its anti-inflammatory activity, propolis exhibits anti-tumor activity, including the inhibition of cancer cell proliferation, the blocking of tumor signaling cascades, and antiangiogenesis. However, for the more apply of propolis its analysis of nectar source, identifying of propolis compound, the molecular mechanism of propolis and the investigation of compounds synergistic effects are essential. In this study, we described the physiological activity of propolis isolated from honeybees.

• Korean Journal of Poultry Science
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• v.50 no.4
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• pp.251-260
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• 2023

This study was conducted to investigate the effect of propolis extract on chicken patty. the meat quality characteristics and storage properties of chicken patties without propolis extract were compared to those with 0.1%, 0.2%, and 0.4% propolis ethanol extract. The addition of propolis extract resulted in increased fat and ash content in the chicken patties. There were no differences in pH, water holding capacity, cooking loss, and texture profile analysis, indicating that the propolis extract did not negatively affect emulsification stability. However, sensory evaluation showed that the higher the concentration of propolis extract added, the lower the total preference of the chicken patties. Over a storage period, patties treated with propolis extract exhibited a lower total microbial count, and volatile basic nitrogen (VBN) content compared to those without propolis extract. Therefore, the addition of propolis to chicken patties does not reduce emulsion stability but improves storage properties. However, the unique flavor of propolis decreases the preference for chicken patties, so the amount must be considered when using it.

• International Journal of Oral Biology
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• v.41 no.4
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• pp.253-262
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• 2016

Streptococcus mutans (S. mutans) is one of the most important bacteria in the formation of dental plaque and dental caries. S. mutans adheres to an acquired pellicle formed on the tooth surface, and aggregates with many oral bacteria. It initiates plaque formation by synthesizing glucan from sucrose, which is catalyzed by glucosyltransferases. Propolis is a resinous mixture produced by honeybees, by mixing saliva and beeswax with secretions gathered from wood sap and flower pollen. Bees prevent pathogenic invasions by coating the propolis to the outer and inner surface of the honeycomb. Propolis has traditionally been used for the treatment of allergic rhinitis, asthma and dermatitis. We investigated the inhibitory effects of propolis ethanol extract on biofilm formation and gene expression of S. mutans. The biofilm formation of S. mutans was determined by scanning electron microscopy (SEM) and safranin staining. We observed that the extract of propolis had an inhibitory effect on the formation of S. mutans biofilms at concentrations higher than 0.2 mg/ml. Real-time PCR analysis showed that the gene expression of biofilm formation, such as gbpB, spaP, brpA, relA and vicR of S. mutans, was significantly decreased in a dose dependent manner. The ethanol extract of propolis showed concentration dependent growth inhibition of S. mutans, and significant inhibition of acid production at concentrations of 0.025, 0.05, 0.1 and 0.2 mg/ml, compared to the control group. These results suggest that the ethanol extract of propolis inhibits gene expression related to biofilm formation in S. mutans.

• The Korea Journal of Herbology
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• v.21 no.3
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• pp.7-19
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• 2006

Objectives : Propolis and Hovenia dulcis Thunb. has been used as treatment of diseases in the Korean medicine. In this study, we investigated that the hepatoprotective effects of Propolis oral administration according to mixture with Hovenia dulcis Thunb. on ${\gamma}-GTP$, GOT, GPT, Total bilirubin, LDH, ALP, Total cholesterol, Triglyceride, SOD, activity of catalase and Glutathione Peroxidase in galactosamine (GalN)-induced liver in rats. Methods : The animals were divided into 5 groups. Control, the liver injury-induced and not treated group. Pro1, liver injury and administrated propolis. Pro2, liver injury and administrated propolis capsule. Pro3, liver injury and administrated mixture of propolis capsule with Hovenia dulcis Thunb. Pro4, liver injury and administrated mixture of Propolis capsule with Hovenia dulcis Thunb. and Artemisia capillaris Thunb.. Animals were treated by Oral administration of Propolis, Hovenia dulcis Thunb., and Artemisia capillaris Thunb. mixture ltime 2 days for 14 days. Results : The Pro1 group was significantly increased on ${\gamma}-GTP$ and activity of Glutathione peroxidase but decreased on GOT in serum as compared with the control group. The Pro2 group was significantly increased on WBC, RBC, Hct, HGB in serum and activity of CuZnSOD as compared with the control group. The Pro 3 group was decreased on Total bilirubin, increased on LDH, WBC, RBC, Hct and HGB in serum as compared with the control group. The Pro 4 group was decreased on GOT in serum as compared with the control group. Conclusion : By evaluating the liver function and lipid metabolism, Pro3 had a hepatoprotective effect on the prevention of hepatotoxity.

• Journal of Life Science
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• v.17 no.5 s.85
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• pp.664-670
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• 2007

The propolis is natural product produced by honeybees and is known to have many biologically useful properties such as anti-microbial, anti-oxidative and anti-tumorigenic activity. However, its radio-protective property has not been well studied. To investigate radio-protective effect of propolis on mouse testis, mice were supplemented with propolis after 5 Gy irradiation. The histological changes of testis were detected by TEM. The results indicate that propolis may protect tissue deformation which is induced by 5 Gy of ionizing radiation. Furthermore, to elucidate the potential molecular mechanisms involved in radio-protective property of propolis, we performed microarray experiments using oligo DNA microarray. We found 65 up-regulated genes and 224 down-regulated genes, whose expression levels were affected more than 2-fold by propolis treatment in mice irradiated at 5 Gy. We confirmed microarray data with reverse transcription-PCR using gene specific primers. The results of RT-PCR are highly correlated with those of microarray. These results may help understanding molecular mechanisms of radioprotective effects by propolis in mouse model.