title: The effect of pigment matrix, temperature and amount of carrier on the yield and final color properties of spray dried purple corn (Zea mays L.) cob anthocyanin powders.
abstract: Spray drying is an economic technique to produce anthocyanin-based colorants. High pigments yields with minimum color degradation are desirable to maximize quality and profits. This study evaluated the impacts of purple corncob (PCC) anthocyanin extraction matrices (hot water, 40% ethanol, C18 purified), drying inlet temperature (130, 150, 170°C) and amount of carrier (2%, 5%, 10% maltodextrin) on the yields and quality of PCC anthocyanin powders. Monomeric and polymeric anthocyanins, color properties (CIELch, haze), and pigments composition before and after spray drying were determined. The yield and final color quality of spray dried PCC anthocyanins were affected (p<0.05) by all parameters evaluated. The pigment matrix, inlet temperature, and carrier amount had biggest impacts on product water solubility, pigments degradation and yield, respectively. The optimal combination of hot water extracts spray dried with 5% maltodextrin at 150°C gave the highest pigment yield (∼90%) with good solubility with the least color loss.
authors.affiliation: Department of Food Science and Technology, The Ohio State University, 110 Parker Food Science and Technology Building, 2015 Fyffe Road, Columbus, OH 43210, USA. Electronic address: lao.27@osu.edu.
authors.forename: Fei
authors.initials: F
authors.lastname: Lao
authors.affiliation: Department of Food Science and Technology, The Ohio State University, 110 Parker Food Science and Technology Building, 2015 Fyffe Road, Columbus, OH 43210, USA. Electronic address: giusti.6@osu.edu.
authors.forename: M Monica
authors.initials: MM
authors.lastname: Giusti
mesh_terms: D000872:Anthocyanins / Q000737:chemistry*; D003116:Color; D005511:Food Handling / Q000379:methods*; D010936:Plant Extracts / Q000737:chemistry*; D011208:Powders / Q000737:chemistry; D012995:Solubility; D013696:Temperature; D003313:Zea mays / Q000737:chemistry*
chemical_list: D000872:Anthocyanins; D010936:Plant Extracts; D011208:Powders
keywords: Anthocyanins; Anthocyanins (PubChem CID: 145858); Color; HPLC; Polymeric; Spray drying; Yield