Phytochemicals in Capsicum oleoresin from different varieties of hot chilli peppers with their antidiabetic and antioxidant activities due to some phenolic compounds |
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| Affiliation: | 1. Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;2. Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand;1. School of Applied Physics, Faculty of Science & Technology (FST), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia;2. Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, Malaysia;3. Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia;1. LAPEA/DEA/FEA (School of Food Engineering), University of Campinas, Rua Monteiro Lobato, 80, Campinas, SP CEP 13083-862, Brazil;2. Faculty of Health Sciences, University Institution Colegio Mayor de Antioquia (COLMAYOR), Carrera 78 # 65–46, Medellín, CEP 050036, Antioquia, Colombia;3. Department of Analytical Chemistry, Faculty of Sciences, University of Cádiz, Agrifood Campus od International Excellence (CeiA3), P.O. Box 40, 11510, Spain;1. College of Materials Science and Engineering, Hebei University of Engineering, Handan 056038, Hebei, PR China;2. Hebei Engineering Technology Research Center of Natural Pigments, Handan 057250, Hebei, PR China;3. Chenguang Biotech Group Limited Corporation, Handan 057250, Hebei, PR China;4. Eurofins Scientific Group, Suzhou 215000, Jiangsu, PR China;1. Department of Vegetable Science, College of Horticulture & Forestry, Central Agricultural University, Pasighat 791102, Arunachal Pradesh, India;2. Amity Institute for Herbal Research & Studies, Amity University UP, Sector-125, Noida 201303, UP, India |
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| Abstract: | Due to its wide use in nutritional therapy, a capsicum oleoresin extraction from hot chilli pepper was optimized using ultrasound assisted extraction. Under optimal conditions, a 0.1 g sample in 10 mL of a 20% water in methanol solution was extracted at 50 °C for 20 min to remove phytochemicals consisting of oleoresin, phenolics, carotenoids, flavonoids, capsaicinoids (pungency level), reducing sugars. Antioxidant and antidiabetic activities of the crude extracts from 14 chilli pepper varieties were examined. The antioxidant and antidiabetic activities of some phenolic compounds were also tested individually. The results showed that these chilli pepper samples are a rich source of phytochemicals with antioxidant and antidiabetic activities. High antioxidant activity of the extracts was evaluated using the 2,2-diphenyl-1-picrylhydrazyl, N,N-dimethyl-p-phenylenediamine dihydrochloride, 2,2′-azino-bis(3-ethylbenzothiazolin-6-sulfonic acid) and ferric ion reducing antioxidant power assays. The crude extracts had a lower level of sugars induced by the inhibitory effect of α-amylase activity. Thus, their enzymatic inhibitory effect might have resulted from a synergism among the phytochemicals concerned. Therefore, a diet with this type of food may have beneficial health effects. |
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| Keywords: | Phytochemicals Antidiabetic Antioxidants Phenolics Chilli pepper Ultrasound assisted extraction |
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