Concentration Of Some Antioxidant Compounds From Paste (Tomato)
Industry Wastes
It is known that there is a reverse relationship between the consumption of fruits and vegetables and the incidence of certain types of cancer and cardiovascular diseases. This protective effect of foods is attributed to bioactive compounds such as carotenoids, phenolics and ascorbic acid. Since the carotenoids are commonly found bioactive compounds in fruits and vegetables and have antioxidant effect, the interest on carotenoids has increased. Tomato and tomato products are the important source of carotenoids. Lycopene and -carotene are the major tomato carotenoids.
Since the gained importance in the use of natural antioxidants as preservatives in food industry instead of synthetic ones, recovery studies of natural antioxidants from food processing by-products (wastes) have increased. Tomato paste industry wastes have also potential to become a source of important compounds having antioxidant properties.
In this study, total antioxidant capacity of paste (tomato) industry waste by easy and cheap CUPRAC (Cupric Ion reducing Antioxidant Capacity) assay which is developed in our laboratories, total phenolic content by Folin-Ciocalteu method and also total carotenoid content by Minguez-Mosquera and Hornero-Mendez method were determined. HPLC method was developed for the determination of phenolic and carotenoid components. For the separation of lycopene and -carotene from phenolic components and each other, carrying out the extraction of tomato waste by 100% acetone, eluting by different volume ratios of ethyl acetate-hexane mixture on alumina sorbent, recoveries of lycopene with 44% yield, -carotene with 26% yield were achieved at the result of this procedure.
AKPINAR Damla
Tez Adı :Bazı Flavanon-Oksim Bileşiklerinin Sentezi, Karakterizasyonu ve Antioksidan Kapasitelerinin İncelenmesi
Danışman : Doç. Dr. Mustafa ÖZYÜREK
Anabilim Dalı : Kimya
Programı : Analitik Kimya
Mezuniyet Yılı : 2013
Tez Savunma Jürisi : Doç. Dr. Mustafa ÖZYÜREK
Prof.Dr. Reşat APAK
Prof.Dr. Birsen DEMİRATA ÖZTÜRK
Doç. Dr. Kubilay GÜÇLÜ
Doç.Dr. Kevser SÖZGEN BAŞKAN
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