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Authors = Zienab A. Muhammad

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14 pages, 393 KiB  
Article
On-Tree Fruit Bagging and Cold Storage Maintain the Postharvest Quality of Mango Fruit
by Atif Nadeem, Zienab Fawzy Reiad Ahmed, Syed Bilal Hussain, Alaa El-Din K. Omar, Muhammad Amin, Saqib Javed, Amjad Ali, Sami Ullah, Kashif Razzaq, Ishtiaq A. Rajwana, Shafa Nayab, Vasileios Ziogas, Shamel M. Alam-Eldein and Amany M. Mira
Horticulturae 2022, 8(9), 814; https://doi.org/10.3390/horticulturae8090814 - 6 Sep 2022
Cited by 33 | Viewed by 5540
Abstract
The present study investigates the influence of on-tree fruit bagging on the quality and shelf life of mango (Mangifera indica L. cv. ‘Samar Bahisht Chaunsa’) during cold storage (12 °C ± 1; 85–90% RH) for 0, 10 and 20 days (d) and [...] Read more.
The present study investigates the influence of on-tree fruit bagging on the quality and shelf life of mango (Mangifera indica L. cv. ‘Samar Bahisht Chaunsa’) during cold storage (12 °C ± 1; 85–90% RH) for 0, 10 and 20 days (d) and subsequent shelf storage under ambient conditions (25 °C ± 1; 60–65% RH). Fruits were covered with brown paper bags at the marble stage and then harvested at commercial maturity. Results showed that 0 d and 10 d cold-stored fruits, irrespective of bagging treatments, retained eatable quality and shelf-life up to 7 d and 5 d during ambient storage, respectively. However, bagged fruits had better postharvest performance compared with non-bagged fruits by exhibiting slower weight loss, higher fruit firmness, more total soluble solids, vitamin C and total phenolic content and higher activities of catalase and superoxide dismutase during cold storage and ambient shelf storage. On the other hand, 20 d cold-stored fruits, both bagged and non-bagged, were decayed when kept under ambient conditions. It is proposed that mango fruit bagging could be a potential cultural practice to preserve postharvest quality up to 10 d of cold storage, followed by 5 d under ambient conditions. Full article
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13 pages, 207 KiB  
Article
Synthesis and Evaluation of the Anti-Microbial Activity of New Heterocycles Containing the 1,3,4-Thiadiazole Moiety
by Thoraya A. Farghaly, Magda A. Abdallah and Zienab A. Muhammad
Molecules 2011, 16(12), 10420-10432; https://doi.org/10.3390/molecules161210420 - 15 Dec 2011
Cited by 19 | Viewed by 5979
Abstract
A new series of thiadiazole-enaminones 4 were synthesized via reactions of 5-acetyl-1,3,4-thiadiazoles 3 with dimethylformamide-dimethylacetal (DMF-DMA). The simple phenyl substituted thiadiazole-enaminone 4f was used as a synthetic precursor for the preparation of a wide variety of new heterocyclic compounds, including the 5-substituted-1,3,4-thiadiazole derivatives [...] Read more.
A new series of thiadiazole-enaminones 4 were synthesized via reactions of 5-acetyl-1,3,4-thiadiazoles 3 with dimethylformamide-dimethylacetal (DMF-DMA). The simple phenyl substituted thiadiazole-enaminone 4f was used as a synthetic precursor for the preparation of a wide variety of new heterocyclic compounds, including the 5-substituted-1,3,4-thiadiazole derivatives 5, 6, 11, 12 and 13, which were obtained via reactions of 4f with nitrogen nucleophiles. Also, reactions of enaminone 4f with carbon nucleophiles afforded the respective 1,3,4-thiadiazoles 8a–d. In addition, the results of the antimicrobial activities of thiadiazole-enaminones 4 and their precursors 2 and 3 indicate that some members of this series display promising activities against all tested microorganisms. Full article
(This article belongs to the Section Medicinal Chemistry)
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