Angiotensin I-converting Enzyme (ACE) Inhibitory Activity of ACE Inhibitory Peptides Produced during the Fermentation of Pigeon Pea (Cajanus cajan) Tempe

Suci Apsari Pebrianti(1*), Muhammad Nur Cahyanto(2), Retno Indrati(3)

(1) Gadjah Mada University
(2) Faculty of Agricultural Technology, Universitas Gadjah Mada
(3) Faculty of Agricultural Technology, Universitas Gadjah Mada
(*) Corresponding Author


Fermentation products are common sources of angiotensin I-converting enzyme (ACE) inhibitory peptides used for hypertension treatment. This research investigated the effect of fermentation time on the ACE inhibitory activity produced during the fermentation of pigeon pea tempe and aimed to determine the optimal fermentation time to obtain pigeon pea tempe with the highest ACE inhibitory activity. Seeds were inoculated with Raprima® (0.02% w/w) containing Rhizopus oligosporus spores and fermented for 0-96 h. Protein pattern, degree of hydrolysis (DH), soluble protein content and ACE inhibitory activity were observed during fermentation. The result from SDS-PAGE shows that protein hydrolysis occurred after 12 h fermentation, marked by the appearance and greater intensity of protein bands with low-molecular-weight (60 kDa). An increase in DH and soluble protein content were detected during the fermentation and reached a maximum of 23.99% and 3.15 mg mL -1 at 96 h fermentation, respectively. The ACE inhibitory activity increased with fermentation time and pigeon pea tempe fermented for 48 h (76.14%) has the highest ACE inhibitory activity with IC 50 values of 0.65 mg mL -1 . It could be concluded that the optimal fermentation time to obtained pigeon pea tempe with the highest ACE inhibitory activity is for 48 h of fermentation.


ACE inhibitor; tempe; fermentation; pigeon pea

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Indonesian Food and Nutrition Progress (print ISSN 0854-6177, online ISSN 2597-9388) is published by the Indonesian Association of Food Technologist in collaboration with Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada.

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