Nurdjanah, Siti and Yuliana, Neti and rangga, azhari and Aprisia, Danita (2019) Inhibition Activity of α-Glucosidase by Anthocyanin Crude Extract from Purple Sweet Potato and Its Products. Biopreopal Industri, 10 (2). pp. 83-94. ISSN E-ISSN 2502-2962; P-ISSN 2089-0877

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Abstract

Purple sweet potato is one of the anthocyanin sources that potential to normalize blood sugar levels in diabetics because it can inhibit α-glucosidase. Since it easily damaged, processing into flour or chips is an alternative to extend the shelf life. This study aimed to determine the content of total phenol, total anthocyanin and inhibition of the α-glucosidase enzyme by crude anthocyanin extract from fresh purple sweet potato, conventional and modified flour and chips. Testing of total phenol, anthocyanin and inhibition of α-glucosidase enzyme activity were carried out using the spectrophotometric method. The results showed that total phenol, anthocyanin and inhibition of α-glucosidase enzyme activity from crude anthocyanin extracts using acid solutions in fresh purple sweet potato were respectively 291.7 mg GAEs/100g, 122.1 mg/100 g; 41.73%; sweet potato flour at 212.1 mg GAEs/100 g, 171.3 mg/100 g; 37.61%; purple sweet potato flour rich in resistant starch of 182.5 mg GAEs/100 g, 141.1 mg/100 g; 65.59%; purple sweet potato flour partially gelatinized of 193.5 mg GAEs/100 g, 139.4 mg/100 g; 39.91%; and purple sweet potato chips of 299.5 mg GAEs/100 g, 203.6 mg/100 g, 44.73%. The ability of anthocyanin to inhibit the activity of the α-glucosidase enzyme could be increased through the retrogradation of starch and frying into chips

Item Type:	Article
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Teknik (FT) > Prodi Magister Teknik Mesin
Depositing User:	Siti Nurdjanah
Date Deposited:	06 Dec 2019 02:03
Last Modified:	06 Dec 2019 02:03
URI:	http://repository.lppm.unila.ac.id/id/eprint/17264

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