Abstract
AbstractThe present study describes chemical composition, antifungal activities, antioxidant assays and total phenolic content of essential oil and different extracts from leaves of Alpinia allughas. Fifty-seven components were identified by gas chromatography and gas chromatography–mass spectrometry with eucalyptol (17.4%) and humulene epoxide II (14.1%) as the main component. The essential oil was found to be remarkable fungicide according to its inhibition action against tested pathogens like Colletotricum falcatum, Rhizoctonia solani, Sclerotinia sclerotium and Sclerotium rolfsii followed by different extracts obtained in hexane, dichloromethane and methanol, respectively, with their minimum inhibitory concentration values ranging from 31.25 to 500 µg/ml. The essential oil showed higher phenolic contents (82.36 µg/ml) than the extracts. The antioxidant assay evaluated in essential oil and extracts by different methods revealed good-to-moderate antioxidant potential with different IC50 values viz. (174...
Highlights
Antioxidants are the substance that overcome oxidative stress by quenching of free radicals and show defensive mechanism against several reactive oxygen species and reactive nitrogen species generated in the body (Sies, 1996)
Food contaminated with fungus leads to the production of toxins and deteriorate food products that pose a serious threat to human health (Celiktas et al, 2007)
Gas chromatography–mass spectrometry (GC–MS) of allughas leaves essential oil (AALEO) Fifty-seven components comprising over 81% were identified in AALEO
Summary
Antioxidants are the substance that overcome oxidative stress by quenching of free radicals and show defensive mechanism against several reactive oxygen species and reactive nitrogen species generated in the body (Sies, 1996). Zingiberaceae, a well-recognised family, is explored worldwide due to its high medicinal value and versatile nature. It comprises 52 genera and about 1,587 species distributed throughout tropical Asia (The Plant List, 2013). Alpinia spp. is used in the treatment of rheumatoid inflammations, cough, asthma, stomachalgia, diabetes, cephalalgia and intermittent fevers (Warrier, Nambiar, & Ramankutty, 1993–1995). It is capable of maintaining the youthful vigour and strength (Sivarajan & Balachandran, 1994), stimulates digestion and purifies blood (Chunekar, 1982). In continuation to our research on family Zingiberaceae, the present investigation reveals the first-time reports on antifungal activity, antioxidant activity and phenolic content of essential oil of this important medicinal herb
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