The growth of Saccharomyces rouxii and Saccharomyces mellis, which are two of the main spoilage organisms of dates, can be inhibited by various treatments. The most effective treatment found in this study that did not affect flavor consisted of a predip of the dates in 2% potassium sorbate solution foltowed by injection of methyl bromide into the sealed package.
Obtusastyrene (4-cinnamylphenol) displays effective antimicrobial activity in vitro against a variety of gram-positive bacteria, yeasts, and molds. The activity of obtusastyrene is not appreciably affected by pH, and its minimal inhibitory concentrations, 12 to 25 ,ug/ml for bacteria and 12 to 100 ,ug/ml for fungi, compare favorably with those of a number of synthetic, phenolic antimicrobial agents.
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