Abstract
The ash gourd (AG) is a popular vegetable used widely for anti-diabetic and anti-obese properties. In the current investigation, the juice of AG pulp was screened for α-glucosidase inhibition. The result showed that the AG juice exhibited α-glucosidase inhibition in the range of 0.46 ± 0.00 to 1.61 ± 0.00 mg/mL as against standard drug acarbose showing inhibition at 0.17 ± 0.56 mg/mL. The study demonstrated that the AG juice may act as an effective, moderately potent inhibitor of α-glucosidase. These results indicate the presence of phytochemicals in AG juice that contribute as α-glucosidase inhibitors. This paper also discusses AG juice powder developed by spray drying with maltodextrin (MD) and gum arabic (GA) as anticaking agents. We observed that the spray-dried juice retained the α-glucosidase inhibition property. It was observed that the powder properties were better with AG juice in combination with MD, whereas AG juice with GA showed better α-glucosidase inhibition. Total polyphenol [19.15 ± 2.03 mg gallic acid equivalent/g (GAE/g)] and flavonoid [16.71 ± 1.5 mg quercetin equivalent/g (QE/g)] content were more in spray-dried powder containing GA.
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Abbreviations
- AG:
-
Ash gourd
- ANOVA:
-
Analysis of variance
- CI:
-
Carr index
- DAD:
-
Diode array detector
- DE:
-
Dextrose equivalent
- DPPH:
-
2,2-Diphenyl-1-picrylhydrazyl
- FC:
-
Folin–Ciocalteu
- GA:
-
Gum arabic
- GA-AG:
-
Ash gourd powder containing GA
- GAE:
-
Gallic acid equivalent
- HA-E:
-
Hydro-alcoholic extraction
- HPLC:
-
High-pressure liquid chromatography
- HR:
-
Hausner ratio
- IC50 :
-
Half maximal inhibitory concentration
- LJP:
-
Lyophilized juice powder
- MD:
-
Maltodextrin
- MD-AG:
-
Ash gourd powder containing MD
- PDA:
-
Photo-diode array
- pNPG:
-
p-Nitrophenyl-α-d-glucopyranoside
- QE:
-
Quercetin equivalent
- RID:
-
Refractive index detector
- RT:
-
Retention time
- TFC:
-
Total flavonoid content
- TPC:
-
Total phenolic content
- UHPLC:
-
Ultra high-pressure liquid chromatography
- ρb :
-
Bulk density
- ρt :
-
Tapped density
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Acknowledgements
A. S. Athira acknowledges the Department of Science & Technology for providing the INSPIRE-SRF fellowship. We are also thankful to Dr. C.G Joshy, senior scientist, CIFT, Cochin for the valuable suggestions for statistical analysis.
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Athira, A.S., Reshma, M.V. Ash gourd (Benincasa hispida (Thunb.) Cogn.) juice as an α-glucosidase inhibitor and its spray-dried juice properties. Food Measure 18, 2598–2608 (2024). https://doi.org/10.1007/s11694-023-02339-z
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DOI: https://doi.org/10.1007/s11694-023-02339-z