Impact Factor & Ranking

3.6 2.7 1.8 0.9 3.324 2014 2015 2016 2017 2018 3.324 2014 2015 2016 2017 2018
  • 1 162
    #61
  • 1 134
    #31
  • 1 123
    #23
  • 1 161
    #55
  • 1 135
    #30
  • 1 125
    #24
  • 1 158
    #86
  • 1 135
    #56
  • 1 129
    #45
  • 1 160
    #57
  • 1 137
    #45
  • 1 133
    #36
  • 1 162
    #51
  • 1 138
    #37
  • 1 135
    #30

About Impact Factor & Ranking

Measure of the number of times an average paper in this journal is cited. Copyright Clarivate Analytics.

Metrics

Year I.F. Biotechnology & applied microbiology Engineering, chemical Food science & technology
2018 3.324 51/162 37/138 30/135
2017 57/160 45/137 36/133
2016 86/158 56/135 45/129
2015 55/161 30/135 24/125
2014 61/162 31/134 23/123

Definition

Impact Factor

The Journal Impact Factor is published each year by Clarivate Analytics. It is a measure of the number of times an average paper in a particular journal is cited during the preceding two years.
For example:

A = the number of times articles published in a specific journal in 2014 and 2015 were cited by journals during 2016.
B = the total number of 'citable items' published by that journal in 2014 and 2015. ('Citable items' are usually articles, reviews, proceedings, etc.; not editorials or letters-to-the-editor.)

2016 impact factor = A/B.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.