By P. Zeuthen
Maintaining foodstuff to increase its shelf-life, when making sure its security and caliber, is a critical preoccupation of the nutrition undefined. for that reason, there was a gentle circulate of latest 'minimal' renovation thoughts. while, the improvement of the hurdle proposal has ended in renewed curiosity within the use of extra conventional maintenance equipment and the methods they are often mixed with more recent applied sciences. With its exotic editors and overseas workforce of members, nutrition upkeep concepts offers an authoritative evaluation of those advancements and the methods they are often mixed to maintain specific meals. half 1 starts through the emergence of a brand new iteration of normal preservatives according to purchaser issues approximately man made ingredients. There are chapters on ordinary antimicrobials, bacteriocins, usual antimicrobials, antimicrobial enzymes and suitable for eating coatings, including a dialogue of ways traditional antimicrobial platforms should be mixed with different applied sciences. half 2 considers present learn at the software of conventional maintenance thoughts. There are chapters at the regulate of Ph and water job to avoid microbial development, and advancements in warmth remedy and freezing. those are complemented through dialogue of ways those strategies might be mixed with one another and more moderen applied sciences to increase shelf-life with out compromising defense or caliber. half three covers those more moderen applied sciences. It contains chapters at the use of biotechnology, advancements in membrane filtration, excessive depth gentle, ultrasound, converted surroundings packaging, pulsed electrical fields and excessive hydrostatic strain. half four considers the demanding situations in combining those innovations in a manner that preserves sensory caliber with no compromising product security. There are chapters on key matters resembling modelling spoilage and the effectiveness of upkeep recommendations, the more and more very important challenge of microbial resistance to using milder upkeep equipment, and surroundings protection standards to account for such difficulties. meals maintenance ideas should be a regular reference in supporting nutrients processors expand shelf-life while maximising meals protection and caliber.
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Extra resources for Food Preservation Techniques (Woodhead Publishing in Food Science and Technology)
SHELEF LA, JYOTHI EK and BULGARELLI MA (1984), `Growth of enteropathogenic and spoilage bacteria in sage-containing broth and foods', J Food Sci, 49, 737±40. SHELEF LA, NAGLIK OA and BOGEN DW (1980), `Sensitivity of some common foodborne bacteria to the spices sage, rosemary, and allspice', J Food Sci, 45, 1042±4. SHIRK RJ and CLARK WL (1963), `The effect of pimaricin in retarding the spoilage of fresh orange juice', Food Technol, 17, 1062. SIRAGUSA GR and JOHNSON MG (1989), `Inhibition of Listeria monocytogenes growth by the lactoperoxidase-thiocyanate-H2O2 antimicrobial system', Appl Environ Microbiol, 55, 2802±5.
Delaquis and Mazza (1995) found a 1±5 log decrease in viable cells of Escherichia coli, Listeria monocytogenes and Salmonella Typhimurium in the presence of 2000 "g AIT per ml of air. Delaquis and Sholberg (1997) examined this effect further and showed that 1000 "g AIT per ml of air apparently decreased viable E. coli O157:H7, Salmonella Typhimurium, and L. monocytogenes by up to 6 logs. However, cells recovered to a large extent if they were exposed to air. E. coli O157:H7 was the most resistant.
Many other spices have been tested and shown to have limited or no activity. They include anise, bay (laurel), black pepper, cardamom, cayenne (red pepper), celery seed, chili powder, coriander, cumin, curry powder, dill, fenugreek, ginger, juniper oil, mace, marjoram, nutmeg, orris root, paprika, sesame, spearmint, tarragon, and white pepper (Marth, 1966; Davidson and Naidu, 2000). 7 Da) or pimaricin is an antifungal agent. It was first isolated from Streptomyces natalensis, a microorganism found in soil from Natal, South Africa (Anonymous, 1991).