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Item Metadata only Extraction and characterization of seed oils from Borassus flabellifer, Caesalpinia pulcherrima, Irvingia malayana and Terminalia catappa and Their application in cosmetic products(Mahidol University. Mahidol University Library and Knowledge Center, 2006) Supaporn Booranathet; Pranee InprakhonItem Metadata only Induction of sister chromatid exchanges by clastogenic effect of palmyrah palm (Borassus flabelliger)(Mahidol University. Mahidol University Library and Knowledge Center, 1987) Duangsmorn Maratana; Punya Temcharoen; Daoroong Kangwanpong; Chinvorn PromchainantPalmyrah (Borassus flabellifer) flour is consumed by people in certain tropical countries. Its extracts were tested for the induction of sister chromatid exchanges (SCEs) in human peripheral lymphocytes by BrdU-giemsa method in order to evaluate the genotoxic effects. The results indicate that these extracts induced SCEs in a dose-dependent way. The average SCE frequencies per cell were 7.51, 8.25, 8.76, 9.16 and 10.13 when treated at the concentrations of 2, 4, 8, 10 and 12 mg/ml medium of palmyrah extracts respectively. The average SCE frequencies per cell of negative control and mitomycin C (positive control) were 5.98 and 34.63 respectively. There was statistically significant difference in SCE frequencies between control and cells exposed to various concentration of palmyrah extracts (p<0.025-0.0005). Except batches no. 4 and 5 at concentration 2 mg/ml medium, the extracts induced no significant increase of SCE frequencies in lymphocyte cultures from female and male individuals respectively (p>0.05). There was as well significant difference in SCE frequencies between the first three batches and the other two batches of palmyrah flour. The number of SCEs per cell did not differ significantly between male and female (p>0.05). The frequency of SCE generally increased when chromosome length increased, SCEs at centromeric region were observed but not related to the different concentration of the extracts. This investigation added an information to the other biological effects of palmyrah flour already described i.e. induction of malignant lymphomas immunosuppression and neurotoxicity in rats, in vitro clastogenicity on human lymphocyte and mutagenic effect on Ames test.Publication Metadata only Effects of natural sugar on acidogenic potential, biofilm biomass, and antiseptic resistance of oral streptococci(2021-01-01) Pimpikar Kanchanadumkerng; Karn Wongsariya; King Mongkut's Institute of Technology Ladkrabang; Mahidol University, including raw cane, palmyra palm and coconut sugar on the acidogenic profiles, biofilm formation and antiseptic treatment efficacy compared with refined sugar. The study was based on single-species and dual-species of Streptococcus mutans ATCC 25175... and Streptococcus sobrinus ATCC 33402. Our results showed that sucrose was a major component of all samples, with percentages of relative content higher than 89.0. Palmyra sugar gave the least pH change at 180 min of 4.84-4.93, which indicated it was the least