Domatesin hasat sonrası hastalıklarına karşı kimyasal savaşıma alternatif olabilecek yöntemler üzerine araştırmalar

































































ABSTRACT MSc Thesis
INVESTIGATIONS ON ALTERNATIVE CONTROL METHODS AGAINST POSTHARVEST DISEASES OF TOMATOES
Ragıp ÖZKAN
Uludag Üniversity Graduate School of Natural and Applied Sciences
Department of Plant Protection
Supervisor: Prof Dr. Özgür Akgün KARABULUT
Recently, due to increasing competitive conditions of late years in food sector and consumer satisfaction; prevention of occuring postharvest losses and introduction of reliable and unhazardous products to human comsumption have come into great prominence. In this study different dosages of essential oils which are generally recognized as safe (GRAS), thymol and eugenol were applied on tomato fruits in combination with Lifepack Class and Lifepack Etb labelled modified atmosphere packages (MAP) in order to impede the postharvest diseases. Tomato fruits were stored at 11C for 14 days in thymol and eugenol combined MAPs. At the end of the storage, variation of the total microorganism, fungi and bacteria population on the surface of thymol and eugenol treated fruits. and percentage of fruit decay were determined. In addition, on the 7th day of the experiment the rate of thymol and eugenol in MAPs were determined by GC (Gas Chromatography) anlysis. According to the results, the increase in thymol and eugenol dosages correspondingly caused a decrease in the total microorganism, fungi and bacteria population on the surface of the fruits, and the percentage of the fruit decay. Among all the treatments, thymol 0,5 g/7g parafin and eugenol 350 l/7g parafin application demonstrated the most effective results in depletion of the total microorganism, fungi and bacteria population while the same treatments showed the best effect on prevention of fruit decay as well. Besides, for all the thymol treatments, phytotoxicity was observed on the fruits in parallel with the increase of dosage. Moreover, on the 7th and 14th days of the experiment, O2 and CO2 rates in MAPs were measured, and over all at the end of the 7th day a decrease in O2(%) rate and an increase in CO2(%) rate were obtained. In conclusion, application of essential oils, thymol and eugenol in combination with MAP was found effective in prevention of post harvest diseases of tomato fruits.
Key Words: Tomato, postharvest diseases, essential oils, modifed atmosphere packaging (MAP), generally recognized as safe (GRAS), thymol, eugenol
2011, viii+52 pages
ii



6. SAYFAYA BENZER SAYFALAR

Bazı önemli geçci nektarin çeşitlerinin soğukta muhafazaları süresince görülen fizyolojik bozulmalar üzerine değişik derim sonrası uygulamaların etkisi - Sayfa 4
ABSTRACT Ph.D. THESIS THE EFFECT OF DIFFERENT POSTHARVEST TREATMENTS ON PHYSIOLOGICAL DISORDERS DURING COLD STORAGE OF SOME IMPORTANT LATE NECTARINES CULTIVARS Aşkın BAHAR DEPARTMENT OF HORTICULTURE INSTITUTE OF NATURAL AND APPLIED SCIENCES UNIVERSITY OF CUKUROVA SUPERVISOR: Prof. Dr. Ömür DÜNDAR Year: 2006, Page: 288 Jury : Prof. Dr. Ömür DÜNDAR Prof. Dr. İbrahim Tayfun AĞAR Prof. Dr. Rahm...

6. SAYFADAKI ANAHTAR KELIMELER

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6. SAYFA ICERIGI

ABSTRACT MSc Thesis
INVESTIGATIONS ON ALTERNATIVE CONTROL METHODS AGAINST POSTHARVEST DISEASES OF TOMATOES
Ragıp ÖZKAN
Uludag Üniversity Graduate School of Natural and Applied Sciences
Department of Plant Protection
Supervisor: Prof Dr. Özgür Akgün KARABULUT
Recently, due to increasing competitive conditions of late years in food sector and consumer satisfaction; prevention of occuring postharvest losses and introduction of reliable and unhazardous products to human comsumption have come into great prominence. In this study different dosages of essential oils which are generally recognized as safe (GRAS), thymol and eugenol were applied on tomato fruits in combination with Lifepack Class and Lifepack Etb labelled modified atmosphere packages (MAP) in order to impede the postharvest diseases. Tomato fruits were stored at 11C for 14 days in thymol and eugenol combined MAPs. At the end of the storage, variation of the total microorganism, fungi and bacteria population on the surface of thymol and eugenol treated fruits. and percentage of fruit decay were determined. In addition, on the 7th day of the experiment the rate of thymol and eugenol in MAPs were determined by GC (Gas Chromatography) anlysis. According to the results, the increase in thymol and eugenol dosages correspondingly caused a decrease in the total microorganism, fungi and bacteria population on the surface of the fruits, and the percentage of the fruit decay. Among all the treatments, thymol 0,5 g/7g parafin and eugenol 350 l/7g parafin application demonstrated the most effective results in depletion of the total microorganism, fungi and bacteria population while the same treatments showed the best effect on prevention of fruit decay as well. Besides, for all the thymol treatments, phytotoxicity was observed on the fruits in parallel with the increase of dosage. Moreover, on the 7th and 14th days of the experiment, O2 and CO2 rates in MAPs were measured, and over all at the end of the 7th day a decrease in O2(%) rate and an increase in CO2(%) rate were obtained. In conclusion, application of essential oils, thymol and eugenol in combination with MAP was found effective in prevention of post harvest diseases of tomato fruits.
Key Words: Tomato, postharvest diseases, essential oils, modifed atmosphere packaging (MAP), generally recognized as safe (GRAS), thymol, eugenol
2011, viii+52 pages
ii

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