Jurnal Teknologi Industri Pertanian
Vol. 25 No. 1 (2015): Jurnal Teknologi Industri Pertanian

PERUBAHAN KANDUNGAN KIMIA SARI ROSELA MERAH DAN UNGU (Hibiscus sabdariffa L.) HASIL PENGERINGAN MENGGUNAKANCABINET DRYER DAN FLUIDIZED BED DRYER

Mardiah, Fransiska Rungkat Zakaria, Endang Prangdimurti, Rizal Damanik TIP (Unknown)

Article Info

Publish Date
07 Aug 2015

Abstract

Roselle leaves were dried to improve handling and increase its preservation. In this study, two methods of drying were used, i.e. cabinet dryer (60oC, 6 hours) and fluidized bed dryer (70oC, 1.5 hours) and two variety of roselles were used, i.e.red roselle and purple roselle. The result showed that drying process decreased the content of anthocyanin, vitamin C and antioxidant capacity compared withthose of fresh roselle. The cabinet dryer maintained more of anthocyanin than fluidized bed dryer. From both dryers, contents of anthocyanin and antioxidant capacity in purple roselle were higher than red roselle,but vitamin C content in red roselle was higher than that in purple roselle. The phytochemical analyses indicated that both of roselles contained flavonoid, steroid, triterpenoid, saponine, tannin and phenolhydroquinone.Keywords: cabinet dryer, fluidized bed dryer, anthocyanin, antioxidant capacity, roselle

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Journal Info
Jurnal Teknologi Industri Pertanian
Website

Abbrev

jurnaltin

Publisher

Institut Pertanian Bogor

Subject

Agriculture, Biological Sciences & Forestry Engineering Industrial & Manufacturing Engineering

Description

The development of science and technology in agriculture, has been instrumental in increasing the production of various agricultural commodities. But climate change is also uncertain world led to decreased agricultural productivity. World energy crisis resulted in higher prices of agricultural ...