Horvitz Szoichet, Sandra Susana
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Horvitz Szoichet
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Sandra Susana
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Agronomía, Biotecnología y Alimentación
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IS-FOOD. Research Institute on Innovation & Sustainable Development in Food Chain
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Publication Open Access Appropriate harvest maturity for exploitation of wild black raspberry (Rubus sp.) fruits during shelf life period from Rawalakot, Azad Jammu and Kashmir(AIMS Press, 2025) Hayyat, Sana; Maqbool, Mehdi; Hamid, Abdul; Shehzad, Muhammad; Anwar, Raheel; Horvitz Szoichet, Sandra Susana; Zahid, Noosheen; Khan, Muhammad Azam; Agronomía, Biotecnología y Alimentación; Agronomia, Bioteknologia eta ElikaduraBlack raspberries (Rubus sp.) are abundantly grown and distributed widely in temperate regions of Pakistan which shows rich plant diversity of fruit species. In this study wildly grown black raspberry fruits were harvested from Rawalakot at three different maturity stages and investigated for physical, biochemical and antioxidant properties. Random samples of wild black raspberry fruits from each maturity stage [turning (75% red, 25% green), full red (100% red), black (100% black)] were stored at room temperature (22 ± 2 °C, 46% RH) for maximum 7 days and analysed on alternate days. Results showed that fruit weight, total soluble solids, pH, vitamin C, total flavonoids, total phenols, total antioxidants and total anthocyanins increased whereas fruit firmness and titratable acidity levels decreased as maturity progressed from turning to black stage. During shelf life period, total soluble solids and pH increased, while fruit weight, firmness, total anthocyanins, total flavonoids and total phenols significantly decreased with shelf life period. Moreover, titratable acidity and vitamin C decreased by advancement in shelf life period. It is advisable that wild black raspberry fruits should be harvested at black stage if used for immediate consumption. However, raspberries can be harvested at full red stage to extend storage period without compromising on fruit quality.Publication Open Access Influence of organic and inorganic fertilizer regimes on growth patterns and antioxidants capacity of strawberry (Fragaria × ananassa Duch.) cv. Chandler(Hindawi, 2022) Zahid, Noosheen; Maqbool, Mehdi; Tahir, Majid Mahmood; Horvitz Szoichet, Sandra Susana; Hamid, Abdul; Khalid, Muhammad Shafique; Ejaz, Shaghef; Jawad, Rashid; Awan, Shahid Iqbal; Rehman, Abdur; Ali, Asgar; Agronomía, Biotecnología y Alimentación; Agronomia, Bioteknologia eta ElikaduraFertilization, either in the form of organic or inorganic, always affects plant growth, yield, and nutritional quality of fruit crops. Further, the efficacy of fertilizers depends on various factors, including the area, climatic conditions, and cultivars. Rawalakot has ideal climatic conditions for growing strawberries. However, no studies related to the impact of different soil amendments on the growth habit and fruit quality of strawberries have been conducted so far. Therefore, in this study, different combinations of organic (farmyard manure (FYM) and poultry manure (PM)) and inorganic (urea) (N 150 kg/ha) fertilizers were used for comparison of growth pattern and postharvest quality of strawberry cv. Chandler. The organic and inorganic fertilizer regimes showed comparatively better results in terms of all the parameters studied. However, plants grown on soils amended with FYM equivalent to 75 kg N per ha + PM equivalent to 75 kg N per ha and FYM equivalent to 50 kg N per ha + PM equivalent to 50 kg N per ha + urea 50 kg N per ha showed 41% and 28% more survival percentage compared to control. Furthermore, the number of leaves, number of flowers, number of fruits, and yield were significantly high in plants grown on amended soil. Moreover, a significantly high amount of total soluble solids (10.0°Brix), titratable acidity (1.18%), ash (0.84%), fiber (3.03%), total phenols (7.61 μg gallic acid/g fresh weight), total flavonoids (7.93 mmol quercetin/100 g fresh weight), and total antioxidants (0.60 activity of FeSO4 mg/g fresh weight) was noted in comparison with control. Similarly, a combined treatment of FYM, PM, and urea also showed good results in terms of all the growth and fruit quality parameters as compared with other fertilizer regimes as well as control. However, the overall results of this study revealed that strawberries grown on soil amended with a combined dose of FYM equivalent to 75 kg N per ha + PM equivalent to 75 kg N per ha could be a potential dose for maximum yield and better quality fruits of strawberry.