Một phương pháp mới trích ly chất khô hòa tan từ lá sen hồng (Nelumbo Nukifera)

Abstract

The benefits of lotus leaf on human health have been approved for many years; however, lotus leaf is often used in simple form. This thesis ínvestigated some extraction methods of concrete fiom lotus leaf (Nelumbo nucifera Gaertn) to enhance its using values. The efiect of solvent types, ethanol concentrates and some methods on extracting yield by one factor experiment is carried out. We also studied the temperature and time of material treatment by ultrasound on the yield. The results showed that, concrete extraction yield from lotus leaf using ethanol 70% by Soxhlet with ultrasound assisted was greater than others observed methods. However, with the time and temperature of ultrasound treatment on material, the extracting yield was not statistically different at the 5 % significance. Nevertheless, ultrasound assisted extraction of concrete from lotus leaf is a helpful method.

Từ khóa: extraction, lotus, yield, ultrasound.