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- W2093493974 abstract "Zinc complex formation with chlorophyll derivatives in spinach pulp was studied by adding 300 ppm Zn2+ for production of stable food colorant, followed by the heating at 110 °C for 15 min. Zinc complex formation increased at pH values of 7.0 or greater. Pectinex Ultra SP-L was selected for enzyme-assisted release of zinc–chlorophyll derivatives from spinach pulp. Effect of enzyme concentration (1–9%), treatment temperature (30–60 °C), and time (30–210 min) on total chlorophyll content (TCC) were optimized using response surface methodology. A quadratic regression model (R2 = 0.9486) was obtained from the experimental design. Optimum treatment conditions were 8% enzyme concentration, 45 °C, and 30 min, which yielded a 50.747 mg TCC/100 g spinach pulp. Enzymatic treatment was followed by solvent extraction with ethanol at a solvent-to-sample ratio of 2.5:1 at 60 °C for 45 min for the highest TCC recovery. Pretreatment with enzyme and extraction in ethanol resulted in 39% increase in Zn–chlorophyll derivative yield." @default.
- W2093493974 created "2016-06-24" @default.
- W2093493974 creator A5067420334 @default.
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- W2093493974 date "2015-06-01" @default.
- W2093493974 modified "2023-10-09" @default.
- W2093493974 title "Enzyme-assisted extraction of stabilized chlorophyll from spinach" @default.
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- W2093493974 doi "https://doi.org/10.1016/j.foodchem.2014.12.059" @default.
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