Plastic and Food Based Taints and Off-Odours Detection in Dishwashers

Abstract

In recent years, due to the relatively more costly cost of steel-based dishwashers, manufacturers have been conducting intensive research on plastic materials instead of steel. As a result of the research studies, low-cost and additive polyethylene and polypropylene materials have begun to replace steel bases. However, the molecules naturally contained in plastic materials, which are petroleum products, reduce the consumer preference by emitting an undesirable odour inside the dishwashers. The aim of this study is to determine the plastic and food-borne off taints or unwanted odors that occur during washing on plastic based produced for use on the base of dishwashers. In the study, calcium-containing polypropylene plastic-based (Caplastic) and talc-containing plastic-based (Talcplastic) dishwashers, and steel-based (Steel) dishwashers were used for comparison. In the results of the study, In the results of the study, 2,2,3,3-tetramethyl butane and 2-pentadecanol compounds were released from the Caplastic base at low temperatures. Dimethyldiazon, 4-methyl octane, 4,7-dimethylundecane and 5,8-diethyldodecane compounds were detected to diffuse from the talc-plastic material at high temperatures. In studies carried out after contamination with food, tetramethylbutane, 2-pentadecanol, dimethyldiazon, 4-methyl octane, 4,7-dimethylundecane, 5,8-diethyldodecane and dioxalan compounds were detected as plastic origin. However, unlike the other two, food-borne molecules could be detected in the steel-based dishwasher.

Keywords

• Plastic
• Polypropylene
• GC-MS
• Food
• Taints and Off-Flavours
• Dishing Washer

Bulaşık Makinelerinde Oluşan Plastik ve Gıda Kaynaklı Kokuların Head Space GC-MS ile Tespiti

Öz

Son yıllarda çelik tabanlı bulaşık makinelerinin göreceli olarak daha maliyetli olması sebebiyle üreticiler, çelik yerine kullanılacak plastik malzemeler üzerine yoğun araştırmalar yapmaktadır. Yapılan araştırmalar sonucunda maliyeti düşük, katkılı polietilen ve polipropilen gibi malzemeler çelikten yapılmış tabanların yerine geçmeye başlamıştır. Ancak petrol ürünü olan plastik malzemelerin doğal olarak içerdiği moleküller bulaşık makinelerinin içerisine istenmeyen koku yayarak tüketici tercihini azaltmaktadır. Bu çalışmanın amacı bulaşık makinelerinin tabanlarında kullanılmak üzere üretilmiş plastik tabanlarda yıkama esnasında oluşan plastik ve gıda kaynaklı kötü kokuların tespit edilmesidir. Çalışmada kalsiyum içeren polipropilen plastik tabanlı (Caplastik) ve talk içeren plastik tabanlı (Talkplastik) bulaşık makineleri, karşılaştırma yapılabilmesi için de çelik taban(Çelik) bulaşık makinesi kullanılmıştır. Çalışma sonuçlarında düşük sıcaklıklarda Caplastik tabandan 2,2,3,3-tetrametil bütan ve 2-pentadekanol bileşikleri açığa çıkmıştır. talk-plastik malzemeden ise yüksek sıcaklıklarda dimetildiazon,4-metil oktan, 4,7-dimetilundekan ve 5,8-dietildodekan bileşiklerinin yayıldığı tespit edilmiştir. Gıdalarla kirletildikten sonra yapılan yapılan çalışmalarda da plastik kaynaklı olarak tetrametilbütan, 2-pentadekanol, dimetildiazon, 4-metil oktan, 4,7-dimetilundekan, 5,8-dietildodekan ve dioksalan bileşikleri tespit edilmiştir. Ancak çelik tabanlı bulaşık makinesinde diğer ikisinden farklı olarak gıda kaynaklı moleküller tespit edilebilmiştir.

Anahtar Kelimeler

• Plastik taban
• polipropilen
• GC-MS
• Gıda
• Kötü Koku
• Bulaşık Makinesi

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