文獻(xiàn)名:Effect of ball milling time on physicochemical properties of Cordyceps militaris ultrafine particles
作者:Yanjun An, Yanan Sun, Min Zhang, Benu Adhikari, Zhongqin Li
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
摘要:Cordyceps militaris powder with different particle sizes, a fungus rich in cordycepin and carotenoids, has different physicochemical properties. To explore the influence of different ball milling time on the properties, a batch ball‐mill was used before high energy nano‐impact mill to produce ultrafine particles from Cordyceps militaris. The particle formation kinetics was covering 2 to 16 hr of grinding was measured and explained. The surface charge (zeta potential), surface activity (surface tension), polarity and cordycepin, and carotenoids contents of particles during dissolution in water were measured and explained. The yield of ultrafine particles ~200 nm did not increase too much during 6–10 hr of grinding but they aggregated significantly at 16 hr of milling. The zeta potential, air‐water surface tension reducing ability, and particle polarity of these ultrafine particles were particle size dependent. The dissolution of cordycepin and carotenoids in water was faster in these ultrafine particles but their dissolution patterns were different. The ultrafine particles of C. militaris can be preferably used in nutraceuticals and as emulsifiers.
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