White mulberry leaf (Morus alba L.) infusion as a strategy to reduce starch digestibility: The influence of particle size of leaf powder

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dc.citation.volume37
dc.contributor.authorAumasa T
dc.contributor.authorApinanthanuwong G
dc.contributor.authorSingh J
dc.contributor.authorKaur L
dc.contributor.authorTian J
dc.contributor.authorPhongthai S
dc.contributor.authorTanongkankit Y
dc.contributor.authorIssara U
dc.contributor.authorOgawa Y
dc.contributor.authorDonlao N
dc.date.accessioned2025-01-08T19:39:18Z
dc.date.available2025-01-08T19:39:18Z
dc.date.issued2024-10-30
dc.description.abstractMulberry leaf (Morus Alba L.) has been found in clinical trials to be effective in reducing diabetes in Asia. The powdered tea market is expanding in popularity due to its functional properties. This study aimed to examine the influence of different particle sizes of mulberry leaf powder (MLP) infusion on the digestibility of starch in cooked Japonica rice (cv. Koshihikari) and the bioaccessibility of phytochemicals. Dried mulberry leaf was pulverized and sieved into several particle sizes: 160 μm (MLP160), 250 μm (MLP250), 404 μm (MLP404), and 774 μm (MLP774). Through simulated in vitro digestion, we assessed starch hydrolysis (%SH), the kinetics of starch hydrolysis, estimated glycemic index (eGI), as well as total phenolic content (TPC) and total flavonoid content (TFC). The smaller particle size of MLP showed a greater reduction of eGI. Specifically, infusions prepared from MLP160 resulted in a reduction of 15 % in eGI for cooked grains and 3 % for slurries, respectively. The reduction in eGI was attributed to the interaction among flavonoids and digestive enzymes, demonstrating a concentration-dependent manner on enzyme inhibition effect. Pulverization significantly influenced the concentration of phytochemicals and their bioaccessibility in infusions. This study offers valuable insights into determining optimal particle sizes for MLP, considering both physical and functional characteristics as well as implications for the food industry. The results further suggest that MLP infusion holds promise as a functional beverage, potentially providing benefits in reducing postprandial hyperglycemia.
dc.description.confidentialfalse
dc.edition.editionNovember 2024
dc.identifier.citationAumasa T, Apinanthanuwong G, Singh J, Kaur L, Tian J, Phongthai S, Tanongkankit Y, Issara U, Ogawa Y, Donlao N. (2024). White mulberry leaf (Morus alba L.) infusion as a strategy to reduce starch digestibility: The influence of particle size of leaf powder. NFS Journal. 37.
dc.identifier.doi10.1016/j.nfs.2024.100196
dc.identifier.eissn2352-3646
dc.identifier.elements-typejournal-article
dc.identifier.issn2352-3646
dc.identifier.number100196
dc.identifier.piiS235236462400035X
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/72337
dc.languageEnglish
dc.publisherElsevier B.V.
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S235236462400035X
dc.relation.isPartOfNFS Journal
dc.rights(c) 2024 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBioaccesibility
dc.subjectGlycemic index
dc.subjectIn vitro digestion
dc.subjectPhytochemicals
dc.subjectStarch digestibility
dc.titleWhite mulberry leaf (Morus alba L.) infusion as a strategy to reduce starch digestibility: The influence of particle size of leaf powder
dc.typeJournal article
pubs.elements-id492268
pubs.organisational-groupCollege of Health
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