Jurnal Teknologi Industri Pertanian
Vol. 17 No. 2 (2007): Jurnal Teknologi Industri Pertanian

MIKROENKAPSULASI d-LIMONEN UNTUK PERISAAN PRODUK EKSTRUSI

Sri Yuliani, Peter J. Torley dan Bhesh Bhandari (Dept. TIP)



Article Info

Publish Date
21 Feb 2012

Abstract

ABSTRACTThe objectives of this research are to determine the effect of microencapsulation on d-limonene retention in starch extrudates and the effect of incorporating encapsulated d-limonene on extruder operation and extrudate properties. Two set of extrusion experiments were carried out in a twin screw extruder (16 mm diameter screw; 40:1 L/D ratio) using corn starch as a food matrix. In one set of experiments, d-limonene was encapsulated in -cyclodextrin. In the other experiments, d-limonene was encapsulated with sodium caseinate. Using a Central Composite Design, three variables were studied: level of encapsulated d-limonene in the feed material, extruder screw speeds and barrel temperatures. Another set of experiment with unencapsulated d-limonene was also performed. Measured parameters included extruder operation parameters (torque and die melt pressure), extrudate properties (expansion ratio and hardness) and d-limonene retention. All variables contributed significantly to the d-limonene retention and extrudate properties. -Cyclodextrin capsules gave higher d-limonene retention (average of 92.2%) than the sodium caseinate capsules (67.5%). A higher expansion ratio was observed from the extrudates containing sodium caseinate capsules than those with -cyclodextrin (average of 1.87 and 1.38, respectively). Extrudates containing -cyclodextrin capsules had a lower hardness (average of 1.14 N/mm2) than those with sodium caseinate capsules (average 2.34 N/mm2). Without encapsulation, retention of d-limonene was the lowest (average of 8.0%), extrudate hardness was the highest (average of 3.38 N/mm2) but expansion ratio was the highest (average of 2.1). Keywords : flavour, microencapsulation, extrusion, d-limonene, -cyclodextrin, sodium caseinate, expansion, texture

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Journal Info

Abbrev

jurnaltin

Publisher

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 ...