NDLI: Antidiabetic and antioxidant functionality associated with phenolic constituents from fruit parts of indigenous black jamun (Syzygium cumini L.) landraces

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Antidiabetic and antioxidant functionality associated with phenolic constituents from fruit parts of indigenous black jamun (Syzygium cumini L.) landraces

Content Provider	Springer Nature Link
Author	Gajera, H. P. Gevariya, Shila N. Hirpara, Darshna G. Patel, S. V. Golakiya, B. A.
Copyright Year	2017
Abstract	Fruit phenolics are important dietary antioxidant and antidiabetic constituents. The fruit parts (pulp, seed, seed coat, kernel) of underutilized indigenous six black jamun landraces (Syzygium cumini L.), found in Gir forest region of India and differed in their fruit size, shape and weight, are evaluated and correlated with antidiabetic, DPPH radical scavenging and phenolic constituents. The α-amylase inhibitors propose an efficient antidiabetic strategy and the levels of postprandial hyperglycemia were lowered by restraining starch breakdown. The sequential solvent systems with ascending polarity—petroleum ether, ethyl acetate, methanol and water were performed for soxhlet extraction by hot percolation method and extractive yield was found maximum with methanolic fruit part extracts of six landraces. The methanolic extracts of fruit parts also evidenced higher antidiabetic activity and hence utilized for further characterization. Among the six landraces, pulp and kernel of BJLR-6 (very small, oblong fruits) evidenced maximum 53.8 and 98.2% inhibition of α-amylase activity, respectively. The seed attained inhibitory activity mostly contributed by the kernel fraction. The inhibition of DPPH radical scavenging activity was positively correlated with phenol constituents. An HPLC–PDA technique was used to quantify the seven individual phenolics. The seed and kernel of BJLR-6 exhibited higher individual phenolics—gallic, catechin, ellagic, ferulic acids and quercetin, whereas pulp evidenced higher with gallic acid and catechin as α-amylase inhibitors. The IC$_{50}$ value indicates concentration of fruit extracts exhibiting ≥50% inhibition on porcine pancreatic α-amylase (PPA) activity. The kernel fraction of BJLR6 evidenced lowest (8.3 µg ml$^{−1}$) IC$_{50}$ value followed by seed (12.9 µg ml$^{−1}$), seed coat (50.8 µg ml$^{−1}$) and pulp (270 µg ml$^{−1}$). The seed and kernel of BJLR-6 inhibited PPA at much lower concentrations than standard acarbose (24.7 µg ml$^{−1}$) considering good candidates for antidiabetic herbal formulations.
Starting Page	3180
Ending Page	3191
Page Count	12
File Format	PDF
ISSN	00221155
Journal	Journal of Food Science and Technology
Volume Number	54
Issue Number	10
e-ISSN	09758402
Language	English
Publisher	Springer India
Publisher Date	2017-08-22
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Syzygium cumini L. Fruit parts α-Amylase inhibition Antioxidant activity HPLC profile Herbal formulation Food Science Nutrition Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Food Science

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