title: Optimisation of microencapsulation of turmeric extract for masking flavour.
abstract: The aim of this study was to evaluate the odour masking property, encapsulation efficiency and physicochemical properties of turmeric extract prepared by a binary blend of wall materials, i.e. brown rice flour (BRF) and beta-cyclodextrin (β-CD). Response surface methodology was applied to investigate the effect of encapsulation processing variables, including core loading mass (5-25%) and β-CD (5-20%) concentration on product recovery, moisture content, hygroscopicity, curcuminoids encapsulation and volatile release. To investigate odour masking properties of a wall material combination, volatiles in headspace were monitored by GC-MS using ar-turmerone and 2-methyl-4-vinylguaiacol as marker compounds to represent turmeric extract. The obtained results revealed an optimal encapsulation process was 5% of core loading mass with addition 20g/L of β-CD, since it enabled high curcuminoids encapsulation with low volatile release, moisture content and hygroscopicity. Turmeric powder with reduced odour can be used as a nutrient supplement or natural colorant for food products.
authors.affiliation: Division of Food Science and Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand.
authors.forename: Natcha
authors.initials: N
authors.lastname: Laokuldilok
authors.affiliation: Division of Product Development Technology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand.
authors.forename: Prodpran
authors.initials: P
authors.lastname: Thakeow
authors.affiliation: National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand.
authors.forename: Phikunthong
authors.initials: P
authors.lastname: Kopermsub
authors.affiliation: Lanna Rice Research Center, Chiang Mai University, Chiang Mai 50100, Thailand; Rice Product Research Unit, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand. Electronic address: niramon.u@cmu.ac.th.
authors.forename: Niramon
authors.initials: N
authors.lastname: Utama-ang
mesh_terms: D030024:Curcuma / Q000737:chemistry*; D004339:Drug Compounding / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D009812:Odorants / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; C012596:turmeric extract
keywords: HPLC; Headspace GC–MS; Microencapsulation; Optimisation; Turmeric extract