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However, the likely activity mechanism is still undetermined. The current study examined and compared the inhibitory abilities of African star apple fruit parts on selected key enzymes related to diabetes mellitus in the pancreas tissue of rat.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Inhibitory effect of aqueous extract (1:10\u2009w\/v) of African star apple fruit parts (pulp, cotyledon, seed coat and pulp coat) on the activities of \u03b1-amylase, \u03b1-glucosidase, as well as their starch composition, phenolic constituents, estimated glycemic index, and antioxidant properties were assessed.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>The fruit parts showed low sugar, eGI, amylose, and amylopectin contents. The analysis also showed that the fruit parts inhibited \u03b1-glucosidase and \u03b1-amylase activities and exhibited antioxidant properties. Furthermore, the fruit parts contain high concentrations of beta-amyrin acetate, eleagine, epicatechin, epigallocatechin, skatole, stigmasterol and tetrahydro \u2212\u20092- methylharman as revealed by HPLC-DAD.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusion<\/jats:title>\n<jats:p>The fruit part low estimated glycemic indices, strong antioxidant properties, inhibition of \u03b1-amylase and \u03b1-glucosidase activities exhibited might be related to the bioactive compounds contained in the extract. This could also be a potential mechanism for the use in the prevention and management of type-2 diabetes. Nevertheless, the African star apple pulp coat displayed the highest property in comparison to other parts of the fruit.<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s12906-020-03053-9","type":"journal-article","created":{"date-parts":[[2020,8,25]],"date-time":"2020-08-25T09:03:36Z","timestamp":1598346216000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Starch composition, glycemic indices, antioxidant properties and carbohydrate hydrolyzing enzymes activities of African star apple fruit parts"],"prefix":"10.1186","volume":"20","author":[{"given":"Olubunmi B.","family":"Ajayi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Folake L.","family":"Oyetayo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7061-8303","authenticated-orcid":false,"given":"Seun F.","family":"Akomolafe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,8,25]]},"reference":[{"issue":"4","key":"3053_CR1","first-page":"1439","volume":"23","author":"T Watcharachaisoponsiri","year":"2016","unstructured":"Watcharachaisoponsiri T, Sornchan P, Charoenkiatkul S, Suttisansanee U. 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