Detection of Extracellular Lipases and Genotypic Identification from Yeast Causing Spoilage of Some Dairy Products Produced in Gaziantep
Abstract
Yeasts are usually found in high amounts in dairy
products, which show their ability to adapt to substrates rich in protein,
lipid, sugar and organic acids. A wide distribution of yeast in dairy products
is a result of proteolytic and lipolytic activities. Spoilage yeasts and molds
can grow in most processed and raw foods, where environmental conditions are
not suitable for most bacteria (low pH, low water activity, aw). Nutrients and
oxygen in food are the main factors that determine the type of fungal spoilage.
In this study, dairy products samples (yoghurt, cream, butter, curd cheese,
Antep cheese) were collected from local
markets in Gaziantep province. In our study, a total of 20 yeast strains were
isolated from dairy products and investigated for lipase activities in solid
media containing tributyrin. Twenty yeast isolates identified by
amplification and sequencing of the ITS region using ITS1 and ITS4 primers Yeasts were identified as Kluyveromyces marxianus (8 isolates), Candida intermedia (8 isolates), Pichia fermentans (2 isolates), Yarrowia lipolytica (1 isolate), Kluyveromyces lactis (1 isolate).
Keywords
Destekleyen Kurum
Proje Numarası
Teşekkür
Kaynakça
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Ayrıntılar
Birincil Dil
İngilizce
Konular
Ziraat, Veterinerlik ve Gıda Bilimleri
Bölüm
Araştırma Makalesi
Yazarlar
Semih Tokak
*
0000-0003-2239-0014
Türkiye
Hüsniye Tansel Yalçın
0000-0003-4870-6267
Türkiye
Tuğçe Duran
0000-0002-7353-4527
Türkiye
Yayımlanma Tarihi
31 Ekim 2019
Gönderilme Tarihi
18 Nisan 2019
Kabul Tarihi
31 Mayıs 2019
Yayımlandığı Sayı
Yıl 2019 Cilt: 22
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