Akademik Veri Yönetim Sistemi
Tezin Türü: Doktora
Tezin Yürütüldüğü Kurum: İstanbul Üniversitesi-Cerrahpaşa, Veteriner Fakültesi, Besin Gıda Hijyeni ve Teknolojisi Bölümü, Türkiye
Tezin Onay Tarihi: 2022
Tezin Dili: Türkçe
Öğrenci: Sanae Rbaibi ZIPAK
Danışman: Serkan Kemal Büyükünal
Özet:
Aim: The aim of this thesis is to investigate the
presence and the possible sources of microplastics (MP) in raw milk.
Method: The samples were collected from Marmara Region
to represent raw milk of cow, buffalo, sheep and goat species. In the research,
131 milk samples from Balıkesir, 23 from Bilecik, 66 from Bursa, 70 from Çanakkale,
59 from Edirne, 36 from Istanbul, 49 from Kırklareli, 33 from Kocaeli, 49 from
Sakarya, 52 from Tekirdağ, and 20 milk samples were taken from Yalova. The
samples were digested artificially with an enzymatic detergent. Then filtration
was carried out at a pressure of approximately 0.5 bar using a 1 μm pore size
glass filter with a vacuum pump. The filter papers were examined using a
binocular biological microscope attached to a 4x magnification camera. SEM-EDS was
used for morphological characterization and elemental analysis. FTIR was used
for the determination of polymer type. Microparticles were photographed using
Cameram Software 1.3.0.8 (
Results: Microplastic was detected in 89.29% of the
entire milk samples. Of these microplastics, 77.36% ethylenepropylene (EP), 18.82%
polytetrafluoroethylene (PTFE), 1.49% polyacrylamide (PAM), 1.01% chloroprene
(CR), 0.81% was polyaramid (PARA), 0.35% was ethylacrylate (EA) and 0.17% was
hydrogenated nitrile butadiene rubber (HNBR). 52.40% of MP particles had fiber,
21.20% film, 12.22% fragment and 14.19% sphere form. 20.08% black, 18.69% blue,
0.1% bluish green, 5.62% brown, 0.04% brownish red, 4.92% green, 2.69% gray, 0.48%
of MP particles orange color, 5.85% pink, 11.21% purple, 24.15% red, 5.25%
transparent and 0.91% yellow. Sizes of MP species in the sample: 0.06% between
10-20 μm, 32.03% between 20-150 μm, 23.88% between 150-500 μm, 14.70% between
500-1000 μm, 29.32% 1000 -5000 μm.
Results: Microplastics were found to be common in raw
milk samples from sheep, goats, buffaloes and cows in the Marmara Region.