NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Biotechnology (IJBT) >
IJBT Vol.03 [2004] >
IJBT Vol.03(4) [October 2004] >


Title: Apple juice clarification using fungal pectinolytic enzyme and gelatin
Authors: Singh, Sandeep
Gupta, Reena
Keywords: apple juice
clarification
gelatin
pectinase
Issue Date: Oct-2004
Publisher: CSIR
IPC CodeInt. Cl.7 A 23 L 1/054, 1/0562; A 01 N 63/04
Abstract:  Clarity in fruit juices, particularly from apples and grapes, is desirable to maintain aesthetically pleasing quality and international standards. For this mainly fungal pectinases are used in industrial processes. In present study, effect of gelatin on efficacy of a fungal pectinolytic enzyme preparation from Aspergillus niger van Tieghem was analyzed for clarification of a commercial apple juice (himcu, sweetened apple juice, Deptartment of Horticulture, Govt of Himachal Pradesh). Juice containing both gelatin and enzyme was about 1.5- to 2-times more clarified in same time of incubation as compared to that containing enzyme alone. The most effective clarification (%T650, 85%; p<0.001) was achieved with 15 IU/ml of enzyme preparation, in presence of 0.01% gelatin, at 45°C in 6 hrs of holding time. Juice treatment, scaled-up to 200-times, resulted in about 143% more transmittance as compared to control. On complete clarification, a viscosity drop of 35.5% was observed in the juice. The clarified juice stored at room temperature (~25°C) did not show any significant haze development after two months of storage.
Page(s): 573-576
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Source:IJBT Vol.03(4) [October 2004]

Files in This Item:

File Description SizeFormat
IJBT 3(4) 573-576.pdf64.64 kBAdobe PDFView/Open
 Current Page Visits: 1080 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 638598 since 06-Feb-2009  Last updated on 15-Dec-2014Webmaster: nopr@niscair.res.in