Abstract Background: Scientific cooperation is one of the main features of the research system that is growing rapidly and research collaboration is the most effective way to share scientific knowledge and technology co-authorship and collaboration in writing articles is one of the indicators that examine credit for scientific articles. Due to the lack of information regarding the participat...

introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...