Effect of Extraction Temperature and Different Carrier Agents on Physicochemical and Antioxidant Properties of Spray-Dried Murraya koenigii (Linn.) Leaf Extract

Effect of excipient wall materials on the development of ginger oleoresin microcapsules: assessing the physicochemical, antioxidant and structural properties

“…This could be related to the finding of lesser hygroscopicity of WPI microcapsules than GA microcapsules, as reported in our previous study 12 . In our study, the encapsulated ginger oleoresin powder samples possessed water activity values below 0.3, thus indicating that they are chemically and microbiologically safe, as it decreases the microbial proliferation, and oxidative and enzymatic activity 32 . Dissolution time is one of the most important powder parameters as it measures the reconstitution speed of powder in water and can be related to the powder moisture content.…”

“…Results showed that WPI ginger oleoresin microcapsules exhibited higher total phenolic and flavonoid contents of 27.26 mg GAE g −1 and 2.94 mg QE g −1 , respectively, than GA oleoresin microcapsules, which possessed 23.40 mg GAE g −1 total phenolic content and 2.28 mg QE g −1 flavonoid content. This high flavonoid and phenolic contents of WPI‐based oleoresin microspheres could be due to its greatly ramified structure, which results in controlled release of bioactive compounds 32 . Earlier, Simon‐Brown et al ., 13 and Nurhadi et al 41 .…”

“…This high flavonoid and phenolic contents of WPI-based oleoresin microspheres could be due to its greatly ramified structure, which results in controlled release of bioactive compounds. 32 Earlier, Simon-Brown et al, 13 and Nurhadi et al 41 reported total phenolic and flavonoid contents of 2.20 mg GAE g −1 and 0.83 mg QE g −1 , respectively, for ginger extract powder encapsulated with different wall materials. The antioxidant activity of ginger oleoresin could be attributed to the existence of polyphenols and flavonoids that were produced as a result of disruption of cellular components, thus contributing to hydrogen donating ability.…”

“…12 In our study, the encapsulated ginger oleoresin powder samples possessed water activity values below 0.3, thus indicating that they are chemically and microbiologically safe, as it decreases the microbial proliferation, and oxidative and enzymatic activity. 32 Dissolution time is one of the most important powder parameters as it measures the reconstitution speed of powder in water and can be related to the powder moisture content. Results indicated that GA-encapsulated ginger oleoresin powder displayed a high dissolution time of 33.21 s, whereas WPIencapsulated powder showed 26.45 s. Powder with high moisture content tends to agglomerate more, thereby increasing the powder reconstitution rate.…”