First report on isolation of 2,3,4-trihydroxy-5-methylacetophenone from palmyra palm (Borassus flabellifer Linn.) syrup, its antioxidant and antimicrobial properties.

Autor: Reshma MV; Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India. Electronic address: reshmamv2001@gmail.com., Jacob J; Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India., Syamnath VL; Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India., Habeeba VP; Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India., Dileep Kumar BS; Agro-Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India., Lankalapalli RS; Chemical Sciences and Technology Division and Academy of Scientific and Innovative Research (AcSIR), CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, Kerala, India. Electronic address: ravishankar@niist.res.in.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2017 Aug 01; Vol. 228, pp. 491-496. Date of Electronic Publication: 2017 Feb 11.
DOI: 10.1016/j.foodchem.2017.02.043
Abstrakt: The first report on isolation and characterization of 2,3,4-trihydroxy-5-methylacetophenone (1), nicotinamide (2), and uracil (3) from palmyra palm syrup is described. Total phenolic content (TPC) and Total flavonoid content (TFC) of palm syrup were 244.70±5.77(mggallic acid/kg of syrup) and 658.45±27.86(mg quercetin/kg of syrup), respectively. Compound 1 exhibited DPPH radical scavenging activity with an IC 50 value of 20.02±0.14μM which was better than ascorbic acid (IC 50 =22.59±0.30μM). Compound 1 also showed broad spectrum antibacterial activity against Escherichia coli, Mycobacterium smegmatis, Staphylococcus aureus and Staphylococcus simulans.
(Copyright © 2017 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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