Jurnal Teknik Mesin
Vol 2, No 1 (2012)

EFFECT OF AIR DRYING TEMPERATURES ON THE QUALITY OF CENTELLA ASIATICA L DRIED PRODUCTS

M Yahya (Institut Teknologi Padang)



Article Info

Publish Date
02 Jul 2013

Abstract

The objective of this study is to evaluate the effect of air drying temperature on the quality of Centella Asiatica L. The drying was conducted by using a constant temperature and humidity drying chamber at different drying temperatures and relative humidities (35 C, 45 C, 55 C, 65 C; 10%, 20%, 30%, 40%, 50%), respectively. Color of Centella Asiatica L was measured using a Chroma meter and the madecascosside and asiaticosside in Centella Asiatica L were identified and quantified using High Pressure Liquid Chromatography (HPLC). The results showed that the color quality of Centella Asiatica L for the drying o temperature below 55 C was decreased but not significantly. The decreasing color quality was significant at o temperature beyond 55 C and at higher relative humidity. This is caused by longer drying time to achieve equilibrium moisture content. The active ingredient (madecascosside and asiaticosside) in Centella Asiatica o L was decreased at temperature beyond 55 C. Based on the results the quality of Centella Asiatica L can be o preserved if the drying process was maintained at temperature less than 55 C. Also the results obtained from this study can be used to design a solar drying system for Centella Asiatica L and other medicinal herbs.

Copyrights © 2012






Journal Info

Abbrev

tmesin

Publisher

Subject

Mechanical Engineering

Description

Jurnal Teknik Mesin (JTM) is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed by at least two ...