Antioxidant Activities and Phenolic Composition of Sarcococca saligna Leaves

Abstract

: Sarcococca saligna (D. DON) Muel is a vital plant with several steroidal alkaloids and is effective against syphilis, liver diseases, gastrointestinal tract disease, infections, and inflammation. The present study aimed to investigate the in vitro antioxidant activities and phenolic profile of S. saligna. High-performance liquid chromatography (HPLC) analysis has shown the presence of twelve phenolics namely kaempferol-3-O-glucoside, proanthocyanidin B1, quercetin-3-malonylglucoside- 7-glucoside, kaempferol-3-O-sophorotioside, Isorhamnetin-3-O-glucoside-7-Orhamnoside, kaempferolhexoside, 4-O-Caffeoyl-5-O-p-coumaroylquinic acid, 3,4-Di-O-caffeoyl-5- O-feruloylquinic acid, 3,4-Di-O-feruloyl-5-O-caffeoylquinic acid, flavogalloyl-HHDP-gluconic acid (lagerstannin B), 3,4-di-O-caffeoylquinic acid and kaempferol-3-(caffeoyldiglucoside)-7-glucoside. The hot water extract showed the highest anti-lipid peroxidative activities. The IC50 value for 2,2- diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was 71.5 ± 2.1 μg/mL. The extract could chelate the iron and possess reducing activities on phosphomolybenum assay. It is concluded that extracts of S. saligna are rich in antioxidants and contain essential phytochemicals. objective: The present study was aimed to investigate thein vitro antioxidant activities and phenolic profile of S. saligna. HPLC analysis has shown the presence of twelve phenolics namely kaempferol-3-O-glucoside, proanthocyanidin B1, quercetin-3-malonyl-glucoside-7-glucoside, kaempferol-3-O-sophorotioside,Isorhamnetin-3-O glucoside-7-O-rhamnoside,kaempferolhexoside, 4-O-Caffeoyl-5-O-p-coumaroylquinic acid, 3,4-Di-O-caffeoyl-5-O-feruloylquinic acid, 3,4-Di-O-feruloyl-5-O-caffeoylquinic acid, flavogalloyl-HHDP-gluconic acid (lagerstannin B), 3,4-di-O-caffeoylquinic acid and kaempferol-3-(caffeoyldiglucoside)-7-glucoside. method: The chemical used were 1,10-phenathroline, Thibarbituric acid, TRIS-HCl, amominium molybdate, Iron, sodium nitroprusside. HPLC standards were purchased from Sigma-Aldrich. All the reagents were of analytical grade. Double beam spectrophotometer was used for UV-VIS spectrophotometery. The HPLC system used was Agilent 1260 Infinity HPLC system which consists of quaternary pump, degasser, auto-sampler and diode array detector (DAD). conclusion: The results have shown that S. saligna antioxidant rich extract can be effectively utilized in food and pharmaceutical industries with additional income. However, more detailed understanding of utilization of extract against degenerative diseases is required. There is also need to find out the safety and bioavailability of the plant extract for its use as nutraceutical and as a plant products.