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J Food Sci Technol. 2016 Jun;53(6):2569-79. doi: 10.1007/s13197-016-2219-7. Epub 2016 Jun 23.

Composition and functionality of whole jamun based functional confection.

Author information

1
Department of Agricultural and Food Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302 India.

Abstract

Whole jamun based functional confection (WJFC) was developed from an optimized blend (through response surface methodology) containing 26.585 % paste of jamun pulp with adhering skin, 2 % jamun seed powder, hydrocolloid mixture (2.289 % agar, 1.890 % pectin and 27.236 % polydextrose), antimicrobials (0.022 % benzoic acid and 0.085 % sorbic acid), and 40 % added water. The confection also contained 0.08 % sucralose, 0.06 % citric acid and 100 mg CaCl2.2H2O/g pectin. The confection was found to be rich in minerals like Ca, Mg, K, Na and P, with prebiotic activity and low glycemic index (48.1). Additionally, WJFC had reduced calorie (1.48 kcal/g) and high dietary fiber content (15.49 ± 0.058 g/100 g (db)). The antioxidant potential measured as DPPH radical scavenging activity and FRAP with different extraction solvents was found to range between 0.26 ± 0.01 and 0.98 ± 0.04 mg BHA/g and 2.57 ± 0.97 and 18.17 ± 1.30 μM Fe(2+)/g, respectively, with highest yield obtained for 50 % aq. ethanolic extract. Moreover, the antioxidant potential was observed to be dose dependent with IC50 values as 9.89 and 2.75 mg (db) against DPPH and superoxide anion radicals, respectively. WJFC was found to suppress α-amylase activity and retard glucose dialysis depicting the antidiabetic effect.

KEYWORDS:

Amylase inhibition; Antidiabetic; Antioxidant; Confection; Glucose dialysis retardation; Glycemic index; Prebiotic effect; Syzygium cumini

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