Uman NUH | today: 12/22/2024
| Author(s) |
Прісс О. П., , , Ulyanych O.I., Doctor of Agricultural Sciences, Professor, Head of Department of of Vegetable Production, Uman National University of Horticulture, Ukraine Шевчук К. М., , , Яковер О. І., , , Ваховська А. В., , , |
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| Category | The Agronomy | ||
| year | 2023 | issue | Issue number 103. Part 1 |
| pages | 7-17 | index UDK | 635.3.635.5 | DOI | 10.32782/2415-8240-2023-103-1-7-17 (Link) |
| Abstract | It has been found that the use of a nutrient medium based on agricultural hydrogel and antioxidants can extend the shelf life of baby leaf spinach by 7–9 days, depending on the hybrid, without reducing the yield of standard products. After 7 days of storage, natural weight losses in the test samples were almost twice less than in the control samples, and with an extended shelf life they did not differ significantly from the control ones on the 7-th day. The smallest losses were in the Korver F1 hybrid with smooth leaves, and the largest in the Acadia F1 hybrid. Storing spinach in a nutrient medium reduces dry matter loss by 10–20 %, depending on the hybrid. Ascorbic acid (AA) losses for 7 days of storage in the control ranged from 28,4 to 35,0 %, depending on the hybrid. The varietal characteristics of spinach are clearly traced in the accumulation of dry matter. The highest dry matter content was fixed in spinach of the Acadia F1 hybrid – 12,11 %. During storage, the dry matter content naturally decreases in all samples. But storing spinach in a nutrient medium reduces the loss of the index by 10–20 %, depending on the hybrid. Storage of spinach using a nutrient medium allows you to stabilize the loss of AA in spinach. A high content of AA was observed in the Acadia F1 hybrid – 88,56 mg × 100 g. The Crosstrack F1 hybrid had almost half as much – 45,1 mg × 100 g, and the Korver F1 hybrid only 32,8 mg × 100 g. However, the dynamics of AA losses is similar for all hybrids and the loss of AA for 7 days of storage in the control reached 28,4–35,0 %. Storage of spinach with the use of a nutrient medium allows to stabilize the loss of AA in spinach, and after 7 days of storage, the index decreased in experimental variants by 12,6–15,3 % compared to the initial content. After a longer storage for a week, the prototypes had a higher AA content than the control after 7 days of storage. The use of a nutrient medium contributed to less intense degradation of pigments. Research samples after 14 days of storage contained a significantly higher number of chlorophylls and carotenoids than control samples after 7 days of storage. After 7 days of storage, the chlorophyll “a” content decreased by 8,6–11,0 % in the research samples and by 43,3–52,0 % in the control samples, depending on the hybrid. After storing the research samples for 14 days, the chlorophyll “a” content decreased by 27,7–28,4 % compared to its initial content. After storage, these differences are leveled and the Crosstrack F1 hybrid contains an 18,6% higher number of carotenoids than Acadia F1 or Korver F1. The trend towards slower breakdown of carotenoids in spinach stored using a nutrient medium remains common. All test samples after 14 days of storage contained a significantly higher number of carotenoids than control samples after 7 days of storage. A similar trend was observed in the case of chlorophyll “b”. | ||
| Key words | spinach, baby leaf, hybrid, shelf life, nutrient medium, hydrogel | ||