Extraction of carotenoids from pumpkin peel and pulp: Comparison between innovative green extraction technologies (ultrasonic and microwave-assisted extractions using corn oil)
Laen...
Kuupäev
2021
Kättesaadav alates
Autorid
Sharma, Minaxi
Bhat, Rajeev
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
MDPI
Abstrakt
Natural pigments improve aesthetic value as well as antioxidant potential of a food
product. This study was designed to determine the effects of green extraction techniques on
carotenoids, polyphenols and antioxidant activities of pulp and peel of two varieties of pumpkin (Cucurbita maxima). Innovative green extractions (IGE; Ultrasound and Microwave-Assisted
Extractions) synergised with corn oil (used as green solvent) were compared with conventional
extraction (CE; hexane/isopropyl alcohol; 60:40, v/v). Results showed total carotenoids to be almost
double on employing IGE (PM2-UAE-peel = 38.03 ± 4.21; PM4-UAE-peel = 33.78 ± 1.76 µg/g) when
compared to conventional extraction (PM2-CE-peel = 19.21 ± 4.39; PM4-CE-peel = 16.21 ± 2.52 µg/g).
Polyphenolic contents ranged between 510.69 ± 5.50 and 588.68 ± 7.26 mg GAE/100 g of extract in
IGE, compared with conventional extracts (269.50 ± 2.17 to 318.46 ± 6.60 mg GAE/100 g) and percent
inhibition of 2,2-Diphenyl-1-picrylhydrazyl (DPPH) ranging between 88.32 ± 1.51 and 93.53 ± 0.30%
in IGE when compared with conventional extraction (50.61 ± 1.44 to 57.79 ± 2.09%). Further, oxidative stability of carotenoids extracts from IGE (protection factor = 1.59 ± 0.01 to 1.81 ± 0.05) were
found to be significantly higher (p < 0.05) than conventional extracts. Based on results, this study supports the use of innovative green extraction techniques to obtain bioactive pigments like carotenoids.
It is anticipated that results generated will find potential applications in food, pharmaceutical and
cosmetic industries
Kirjeldus
Märksõnad
pumpkin, carotenoids, green extraction, ultrasound-assisted extraction, microwaveassisted extraction, corn oil, antioxidant potential, articles