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Enzymic lactose hydrolysis

Journal Article:

Abstract

Acid or enzymic hydrolysis can be used to hydrolyze lactose. Advantages of both are compared and details of enzymic hydrolysis using yeast or fungal enzymes given. The new scheme outlined involves recycling lactase. Because lactose and lactase react to ultrafiltration (UF) membranes differently separation is possible. Milk or milk products are ultrafiltered to separate a concentrate from a lactose-rich permeate which is treated with lactase in a reactor until hydrolysis reaches a required level. The lactase can be removed by UF as it does not permeate the membrane, and it is recycled back to the reactor. Permeate from the second UF stage may or may not be recombined with the concentrate from the first stage to produce a low lactose product (analysis of a typical low-lactose dried whole milk is given). Batch or continuous processes are explained and a batch process without enzyme recovery is discussed. (Refs. 4).
Publication Date:
Jan 01, 1980
Product Type:
Journal Article
Reference Number:
EDB-82-139840
Resource Relation:
Journal Name: Food Technol. Aust.; (Australia); Journal Volume: 32:3
Subject:
09 BIOMASS FUELS; ENZYMES; RECYCLING; LACTOSE; ACID HYDROLYSIS; ENZYMATIC HYDROLYSIS; MEMBRANES; ULTRAFILTRATION; CARBOHYDRATES; CHEMICAL REACTIONS; DECOMPOSITION; DISACCHARIDES; FILTRATION; HYDROLYSIS; LYSIS; OLIGOSACCHARIDES; ORGANIC COMPOUNDS; SACCHARIDES; SEPARATION PROCESSES; SOLVOLYSIS; 140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989); 090222 - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)
OSTI ID:
5203706
Research Organizations:
Sharpe Lab. Pty. Ltd., 24 Punch Street, Artarmon, NSW 2064, Australia
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: FTAUA
Submitting Site:
HEDB
Size:
Pages: 144, 146-147
Announcement Date:

Journal Article:

Citation Formats

Miller, J J, and Brand, J C. Enzymic lactose hydrolysis. Australia: N. p., 1980. Web.
Miller, J J, & Brand, J C. Enzymic lactose hydrolysis. Australia.
Miller, J J, and Brand, J C. 1980. "Enzymic lactose hydrolysis." Australia.
@misc{etde_5203706,
title = {Enzymic lactose hydrolysis}
author = {Miller, J J, and Brand, J C}
abstractNote = {Acid or enzymic hydrolysis can be used to hydrolyze lactose. Advantages of both are compared and details of enzymic hydrolysis using yeast or fungal enzymes given. The new scheme outlined involves recycling lactase. Because lactose and lactase react to ultrafiltration (UF) membranes differently separation is possible. Milk or milk products are ultrafiltered to separate a concentrate from a lactose-rich permeate which is treated with lactase in a reactor until hydrolysis reaches a required level. The lactase can be removed by UF as it does not permeate the membrane, and it is recycled back to the reactor. Permeate from the second UF stage may or may not be recombined with the concentrate from the first stage to produce a low lactose product (analysis of a typical low-lactose dried whole milk is given). Batch or continuous processes are explained and a batch process without enzyme recovery is discussed. (Refs. 4).}
journal = {Food Technol. Aust.; (Australia)}
volume = {32:3}
journal type = {AC}
place = {Australia}
year = {1980}
month = {Jan}
}