title: Quantitative analysis of mycoflora on commercial domestic fruits in Japan.
abstract: A comprehensive and quantitative analysis of the mycoflora on the surface of commercial fruit was performed. Nine kinds of fruits grown in Japan were tested. Overall fungal counts on the fruits ranged from 3.1 to 6.5 log CFU/g. The mean percentages of the total yeast counts were higher than those of molds in samples of apples, Japanese pears, and strawberries, ranging from 58.5 to 67.0%, and were lower than those of molds in samples of the other six fruits, ranging from 9.8 to 48.3%. Cladosporium was the most frequent fungus and was found in samples of all nine types of fruits, followed by Penicillium found in eight types of fruits. The fungi with the highest total counts in samples of the various fruits were Acremonium in cantaloupe melons (47.6% of the total fungal count), Aspergillus in grapes (32.2%), Aureobasidium in apples (21.3%), blueberries (63.6%), and peaches (33.6%), Cladosporium in strawberries (38.4%), Cryptococcus in Japanese pears (37.6%), Penicillium in mandarins (22.3%), and Sporobolomyces in lemons (26.9%). These results demonstrated that the mycoflora on the surfaces of these fruits mainly consists of common pre- and postharvest inhabitants of the plants or in the environment; fungi that produce mycotoxins or cause market diseases were not prominent in the mycoflora of healthy fruits. These findings suggest fruits should be handled carefully with consideration given to fungal contaminants, including nonpathogenic fungi, to control the quality of fruits and processed fruit products.
authors: Division of Microbiology, National Institute of Health Sciences, 1-18-1 Kamiyoga, Stetagaya-ku, Tokyo 158-8501, Japan. mwatanabe@nihs.go.jp
authors: Maiko
authors: M
authors: Watanabe
authors: Fumiyuki
authors: F
authors: Tsutsumi
authors: Rumi
authors: R
authors: Konuma
authors: Ken-Ichi
authors: K
authors: Lee
authors: Kensuke
authors: K
authors: Kawarada
authors: Yoshiko
authors: Y
authors: Sugita-Konishi
authors: Susumu
authors: S
authors: Kumagai
authors: Kosuke
authors: K
authors: Takatori
authors: Hirotaka
authors: H
authors: Konuma
authors: Yukiko
authors: Y
authors: Hara-Kudo
mesh_terms: D015169:Colony Count, Microbial; D003132:Commerce; D003257:Consumer Product Safety; D005506:Food Contamination / Q000032:analysis*; D005511:Food Handling; D005516:Food Microbiology; D005638:Fruit / Q000382:microbiology*; D005658:Fungi / Q000254:growth & development* / Q000302:isolation & purification; D006801:Humans; D007564:Japan