Open AccessTítulo en español.
Author(s) -
Lilybett Valentín-Ramos
Publication year - 1959
Publication title -
the journal of agriculture of the university of puerto rico/the journal of agriculture of the university of puerto rico
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 10
eISSN - 2308-1759
pISSN - 0041-994X
DOI - 10.46429/jaupr.v43i4.12571
Subject(s) - bacillus cereus , cereus , biology , bacillus pumilus , humanities , philosophy , bacteria , genetics
A study was undertaken for the purpose of obtaining information about the flora normally encountered in sweetpotatoes and fresh guavas. Homogeneous suspensions of the cortex and flesh of both products were prepared in sterile water and used for the isolation of micro-organisms. Isolations were carried out on Tryptone Glucose Extract Agar plates incubated at 27°, 37°, and 55° C. An extensive study of the morphological and physiological characteristics of each micro-organism was carried out in accordance with the 7th edition of the Bergey's Manual of Determinative Bacteriology (1957). It was found that the organisms isolated from sweetpotatoes are similar to the Genera Bacillus cereus and B. lichemformis. Those isolated from guava were classified as Bacillus megatherium; B. cereus; B. pumilus; B. subtilis var. niger; and Staphylococcus aureus.