dc.contributor.author | Benjamat Chailap | en_US |
dc.contributor.author | Thanesuan Nuanyai | en_US |
dc.date.accessioned | 2019-11-15T02:53:52Z | |
dc.date.available | 2019-11-15T02:53:52Z | |
dc.date.issued | 2019 | |
dc.identifier.uri | http://repository.rmutr.ac.th/123456789/1165 | |
dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/1165 | |
dc.description.abstract | In this research, the antioxidant efficacy of the crude extract from stem
bark of Garcinia pedunculata were investigated. The crude extract was derived from
methanol solvent extraction and extracted with ethyl acetate solvent. Then, the crude
extract of ethyl acetate was separated by column chromatography technique using
acetone and hexane solvent system to obtain 6 sub-fraction parts (FR1-FR6). The
antioxidant activity of sub-fraction 1 (FR1) did not be showed because of its limiting
solubility in antioxidant testing solvent. The sub-fractions 2 - 6 (FR2-FR6) were tested for
antioxidant activity by DPPH technique. It was found that, the sub-fraction 2 did not show
the antioxidant activity. The sub-fractions 3 - 6 exhibited the efficiency of 50 percent DPPH
free radical inhibition (IC) in the concentration ranges of 327.59 - 10.59 ug / mL. The
sub-extraction part 6 (FR6) displayed the most effective DPPH inhibition with the value of
IC 5050 equal to 10.59 0.40 which was compared with the standard Trolox with IC
equal to 5.08 0.68. This indicated that the polarity of the crude extracts in each sub-fractions
influenced on DPPH free radical inhibition. Moreover, the antioxidant activity results of
these sub-fractions using ABTS technique were consistent with the results from DPPH
technique. These promising results should be able to apply for the development of
cosmetics and spa. | en_US |
dc.language.iso | TH | en_US |
dc.publisher | Rajamangala University Of Technology Rattanakosin | en_US |
dc.subject | Garcinia pedunculata | en_US |
dc.subject | Antioxidant activities | en_US |
dc.subject | Extract | en_US |
dc.subject | Cosmetic | en_US |
dc.title | Antioxidant activities and cosmetic application of stem barks of Garcinia pedunculata | en_US |
dc.title.alternative | ประสิทธิภาพการต้านอนุมูลอิสระและการประยุกต์ใช้ในเครื่องสําอางของเปลือกลำต้นของต้น Garcinia pedunculata | en_US |
dc.type | Research | en_US |