Abstract
SummaryFor the protection of anthocyanins from berries of Berberis lycium Royle, the freeze dried microencapsulation method was used in five different combinations of chitosan (CH), Prunus cerasoides gum exudate (PG) and galactomannan as wall material with anthocyanin (ANS) as core material. The microencapsulated powders with different proportions of wall material showed encapsulation efficiency in the range of 90.51%–94.60%. Fourier‐transform infrared spectroscopy confirmed the cross‐linking interactions between ANS and wall materials. Enhanced thermal stability of the ANS with wall materials was indicated by thermogravimetric analysis. The stability of microcapsules and ANS was evaluated by spectrophotometric and liquid chromatographic methods at two conditions (4 °C and room temperature) during 90 days. The results revealed that ANS encapsulated with CH‐PG/ANS (4/1) exhibited maximum retention of anthocyanins (72.88% and 60.02%) and enhanced the stability and antioxidant potential of anthocyanins.
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