PMID- 35991985 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220823 IS - 2405-8440 (Print) IS - 2405-8440 (Electronic) IS - 2405-8440 (Linking) VI - 8 IP - 8 DP - 2022 Aug TI - Evaluation of anthoxanthins and their actions on digestive enzyme inhibition when used independently and in combination. PG - e10131 LID - 10.1016/j.heliyon.2022.e10131 [doi] LID - e10131 AB - Carbohydrate digestibility is a key determinant for elevated postprandial hyperglycemia (PPHG). Apart from dietary restrictions, one of the strategies to reduce PPHG is to limit the activity of carbohydrate digestive enzymes within the gastrointestinal tract in order to reduce monosaccharide absorption rates. The present work aimed to assess the inhibitory capabilities of digestive enzymes (e.g., alpha-glucosidase and alpha-amylase) by anthoxanthins when used independently, in combination with acarbose, or with a different anthoxanthin. Our results showed that quercetin, myricetin, and luteolin presented lower IC(50) values than acarbose and inhibited alpha-glucosidase through mixed-type inhibition. On the other hand, acarbose when compared with these anthoxanthins, remained the most potent inhibitor of alpha-amylase. Combinatorial treatment (i) acarbose-quercetin and (ii) myricetin-luteolin showed synergistic activity (CI value less than 0.9) in alpha-glucosidase inhibition. An additive effect (CI value between 0.9 and 1.1) in alpha-glucosidase inhibition was observed when acarbose-myricetin, acarbose-luteolin or when a combination of two different anthoxanthins (quercetin-myricetin and quercetin-luteolin) was used. This study suggests the potential use of anthoxanthins as functional food ingredients to mitigate PPHG towards the management of T2DM. CI - (c) 2022 The Author(s). FAU - Koh, Yong Qin AU - Koh YQ AD - Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore. FAU - Sin, Yu Ang Desmond AU - Sin YAD AD - Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore. FAU - Rong, Hengyang Justin AU - Rong HJ AD - Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore. FAU - Chua, Teng Hui Sean AU - Chua THS AD - Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore. FAU - Ho, Si-Han Sherman AU - Ho SS AD - Hoow Foods Pte Ltd, 67 Ayer Rajah Crescent, Singapore. FAU - Ho, Han Kiat AU - Ho HK AD - Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore. LA - eng PT - Journal Article DEP - 20220808 PL - England TA - Heliyon JT - Heliyon JID - 101672560 PMC - PMC9389255 OTO - NOTNLM OT - Acarbose OT - Anthoxanthins OT - Synergistic inhibition OT - alpha-amylase OT - alpha-glucosidase COIS- The authors declare no conflict of interest. EDAT- 2022/08/23 06:00 MHDA- 2022/08/23 06:01 PMCR- 2022/08/08 CRDT- 2022/08/22 04:20 PHST- 2022/04/24 00:00 [received] PHST- 2022/06/22 00:00 [revised] PHST- 2022/07/27 00:00 [accepted] PHST- 2022/08/22 04:20 [entrez] PHST- 2022/08/23 06:00 [pubmed] PHST- 2022/08/23 06:01 [medline] PHST- 2022/08/08 00:00 [pmc-release] AID - S2405-8440(22)01419-0 [pii] AID - e10131 [pii] AID - 10.1016/j.heliyon.2022.e10131 [doi] PST - epublish SO - Heliyon. 2022 Aug 8;8(8):e10131. doi: 10.1016/j.heliyon.2022.e10131. eCollection 2022 Aug.