Abstract
Asiaticoside là một triterpene chiết xuất rau má. Nhiều nghiên cứu đã chứng minh dược tính của hợp chất này trong việc chữa lành vết thương, cải thiện trí nhớ và cải thiện da. Tuy nhiên, độ tan kém của nó hạn chế khả năng ứng dụng trong các chế phẩm nông nghiệp. Để cải thiện độ tan của asiaticoside, chúng tôi tiến hành kỹ thuật vi bao bằng phương pháp sấy phun thông qua đánh giá ảnh hưởng của loại chất mang, nồng độ chất khô và nhiệt độ sấy đến hàm lượng asiaticoside có trong bột rau má. Kết quả cho thấy tỉ lệ chất mang cyclodextrin/maltodextrin 1:8, nồng độ chất khô 21%, nhiệt độ sấy phun 190 °C cho hàm lượng asiaticoside cao nhất (1,0634 mg·g–1). Bột vi bao có độ ẩm, độ tan, màu sắc và hàm lượng asiaticoside ổn định sau sáu tháng bảo quản ở nhiệt độ thường.
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