Journal
JOURNAL OF ASIA-PACIFIC ENTOMOLOGY
Volume 21, Issue 2, Pages 563-570Publisher
KOREAN SOC APPLIED ENTOMOLOGY
DOI: 10.1016/j.aspen.2018.03.007
Keywords
Stingless bee honey; Geniotrigona thoracica; Heterotrigona itama and Heterotrigona erythrogastra; Anti-oxidant activity; Anti-microbial activity
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Funding
- Ministry of Science and Technology, Taiwan, ROC [MOST 103-2313-B-150 -001]
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Stingless honey bees form a large group of bees that lack of a sting and are found among Meliponinae species indigenous to various tropical and subtropical regions. They are able to produce stingless bee honey that contains divergent categories of phenolic and flavonoid compounds and have been associated with antioxidant and antibacterial activity. This study examines the physicochemical properties, antioxidant-activity and antimicrobial activity of stingless bee honey from Malaysia that was produced by Geniotrigona thoracica, Heterotrigona itama and Heterotrigona erythrogastra. The results show that G. thoracica honey has the highest concentration of the total phenolic context (99.04 +/- 5.14 mg/ml) and the greatest reducing power (19.05 +/- 0.79%), while flavonoids (17.67 +/- 0.75 mg/ml), reducing power (18.10 +/- 0.35%), DPPH (47.40 +/- 3.18%) and FRAP (50.66 +/- 5.77 mM of Fe2+/100 g) of H. itama honey is significantly higher than those of the other honeys. In addition, G. thoracica honey has the highest antibacterial activity against Staphylococcus xylosus (2.10 +/- 0.10 cm), which is Gram-positive bacterium, and against Pseudomonas aeruginosa (1.60 +/- 0.10 cm) and Vibrio parahaemolyticus (2.03 +/- 0.06 cm), which are Gram-negative bacteria. These results suggest that stingless bee honeys possess useful amounts of phenolic and flavonoid compounds that are able to act as natural anti-oxidants and also have significant anti-microbial activity.
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