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Chemical and microbiological changes occurring in wheat silage maintained under modified atmospheres
Author(s) -
Lisker Norberto,
Taari Eli,
Ashbell Gilad,
Henis Yigal
Publication year - 1989
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740470114
Subject(s) - silage , lactic acid , chemistry , food science , acetic acid , zoology , bacteria , biology , biochemistry , genetics
In wheat silage maintained for 21 days at 26°C and 9‐9 kPa water vapour pressure under a continuous flow of modified atmospheres (MAs) containing 20% v/v O 2 and different concentrations of CO 2 (from 20 % v/v to 80 % v/v) there was a significant increase in pH and in the colony‐forming units (CFU) of aerobic bacteria, yeasts and moulds. In addition, water‐soluble carbohydrates (WSC) and acetic and lactic acids decreased considerably. Similar results were obtained with a continuous flow of 90 %, 95 % and 99 % v/v CO 2 (supplemented to 100 % v/v with O2) and with 100 % v/v pure O 2 Only with silage kept in an atmosphere of 100 % v/v CO 2 or of 100 % v/v N 2 were no changes observed.