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    Improving mulberry shelf-life with 1-Methylcyclopropene and modified atmosphere packaging
    (Pergamon-Elsevier Science Ltd, 2023) Kizildeniz, Tefide; Hepsag, Fatma; Hayoglu, Ibrahim
    Black mulberries fruit are well-known sources of nutrition and their high levels of phenolics, flavonoids, and antioxidants. However, their short shelf-life and postharvest quality preservation remain a significant handicap for consumption and processing purposes. Therefore, the aim of this work was to assess the impact of 1-Methyl-cyclopropene (1-MCP) with modified atmosphere packaging (MAP) treatment on postharvest quality. The effi-cacy of two different concentrations of 1-MCP (2 and 4 mu l-1) were applied in concomitance with MAP in O2/CO2 change, technological and phenolic maturity laid up at +/- 3 degrees C for 15 days were estimated. The skin color of black mulberry fruits was decreased insignificantly by pre-treated 1-MCP application. L*, a* and b* values are varied but any significant difference was observed. 1-MCP treatment encouraged influence of preventing decreases in total phenolic content. 4 mu l L-1 1-MCP remarkably restricted both improving of skin color and enhancement soluble solids, protected quality and enlarged postharvest life.
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    Pesticide residues and health risk appraisal of tomato cultivated in greenhouse from the Mediterranean region of Turkey
    (Springer Heidelberg, 2021) Hepsag, Fatma; Kizildeniz, Tefide
    This research aims at assessing the health risks associated with pesticide residues in greenhouse grown tomato production in the Mediterranean Region of Turkey. A multiresidue method based on modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) was used for sample preparation that is applied for pesticide detection from extraction of tomato samples in the methodology generated by The Association of Official Analytical Chemists (AOAC) Official Method. The restrain of the quantification varied from 0.002 to 0.009 mg kg(-1). The validated data exposed both adequate recoveries, repeatability and reproducibility, including accomplished all other requirements of the European DG SANTE/12682/2019 Guideline. This study divulges that tomatoes cultivated in greenhouse demonstrate 61.5% of samples with one or various pesticide residues. The maximum permitted residue level of above the EU DG Guideline was in 12.2% of the samples. The main determined pesticide residues on the tomatoes cultivated in greenhouse were identified as chlorpyrifos methyl, cyfluthrin, deltamethrin, and acetamiprid. Chlorpyrifos methyl (9.5%), cyfluthrin (6.6%), deltamethrin (5.5%), and acetamiprid (3.2%) were recognized as the most conducing residues to the hazard index (HI). The HI was 9.5% for adults and 11.02% for children (3 to <10 years). The major contributor of the HI was chlorpyrifos in both.