Myxobacteria
길이가 대략 3-15㎛이고 두께는 0.6-1.2㎛인 간균 형태의 전형적인 그람음성 박테리아
절대호기성 토양박테리아
단세포생물, 다세포 자실체를 형성
유기물이 많은 토양, 나무껍질의 표면, 썩은 식물체 등에서 주로 서식
셀룰로오스와 같은 유기물질을 분해, 이용해서 자라거나, 주변의 다른
bacteria(LAB).
Definition
host-synthesized, low-molecular-weight, broad-spectrum antimicrobial compounds
Enzymes responsible for synthesis
themselves synthesized
Appear effect at high level of Phytoalexins
Definition
natural antimicrobial compounds
commonly found in fruits and vegetables
Applica
bactericide effects (MIT)
1918 US-Patent to use X-rays for the preservation of food
1921 Describing the elimination of Trichinella spiralis in pork using X-rays
1930 French patent on food irradiiation
1943 Become active in the field of food preservation for the US-Army (MIT)
1953-1980 Sponsoring research activities on food irradiation of US Army
-> a linking of the technology with
bacteria in food. Today, health and safety authorities in over 40 countries have approved irradiation of over 60 different foods, ranging from spices to grains to deboned chicken meat, to beef, to fruits and vegetables. As of August 1999, over 30 countries are irradiating food for commercial purposes. There are approximately 60 irradiation facilities being used for this purpose with more under co