Stimulating Effect of Gamma Radiation on Some Active Compounds in Eggplant Fruits

Abstract

A FIELD experiment was performed to study the effect of gamma irradiation (0.0, 50 and 100Gy) on growth parameters and bioactive compounds of different parts of eggplant. All growth parameters studied showed an increase when using a dose of 50Gy gamma rays. Also, 50Gy increased total phenolic contents (2.140, 4.039 and 2.965mg/g DW) for pulp, peel and whole fruits, respectively. A dose level at 50Gy increased flavonoid contents (0.835, 4.301 and 3.166mg/g DW) for pulp, peel and whole fruits, respectively. Moreover, tannin contents increased at a dose of 50Gy to (5.853, 7.94 and 7.79mg/g DW) for pulp, peel and whole fruits respectively; the highest contents were detected in peels followed by the whole fruits and the pulps. The DPPH radical scavenging activity of eggplant extracts varies according to the plant part. The antioxidant activity in the whole fruit was less than the peel and pulp while the highest antioxidant activity was in the peel. Otherwise, the amino acid and total soluble protein contents were higher in pulp in all treatments. Phenyl alanine ammonia-lyase (PAL) enzyme and polyphenol oxidase enzyme showed increases in their activities as gamma radiation increased to 50Gy, while increasing irradiation dose level to 100Gy reduces both enzyme activities. FT-IR showed the appearance and disappearance of function group in control and irradiated plants. Meanwhile, the results confirmed the presence of C-H stretching phenol (1020cm-1), alkane C-H blending (1450cm-1) and O-H stretching, lipid at (1450cm-1), and carbohydrate amino acids (3940.39cm-1) in eggplant plants different parts control and irradiated.

Hormetic effect of gamma irradiation under salt stress condition in Phaseolus vulgaris

“…In addition, the fact that the plants could not be obtained at a salt stress of 200 mM was another evidence of the sensitivity of 'F16'. Simple organic molecules, such as free amino acids, are involved in the regulation of plant osmosis in saline soil conditions (Aly et al, 2019b). Consistent with this study, studies in different plants show that amino acid synthesis is related to the plant's stage of development, intensity, and duration of the stress (Yang et al, 2015;Farhangi-Abriz and Ghassemi-Golezani, 2016;Xie et al, 2020).…”

Effect of Gamma irradiation on some biochemical properties, antioxidant and antimicrobial activities of Sakouti and Bondoky dry dates fruits genotypes

“…Topuz & Ozdemir (2004) published as a consequence of gamma irradiation treatment, that phenols contents had been significantly enhanced in relation to tannin degradation and the modification of molecule structure. Furthermore, phenylalanine ammonia-lyase enzyme recreation, which is accountable for polyphenolic acid synthesis, was increased by increasing the gamma irradiation dose level (Aly, Eliwa, & AbdEl-Megid, 2019;Oufedjikh, Mostafa, Josèphe Amiot, & Lacroix, 2000). The contemporary findings have been reported by Harrison & Were (2007), who showed that the rise of date fruits phenolic content should be given to their launch from glycosidic precursors and the degradation of bigger polymeric phenolic compound to lower gadgets through gamma-ray treatments.…”

X-ray irradiation changes germination and biochemical analysis of two genotypes of okra (Hibiscus esculentus L.)

“…The elevated doses of radiation harm plants to a large extent (Hegazi & Hamideldin, 2010). In addition, there are some evidences from literature that the exposure of low ionizing radiation dose caused stimulation of growth (Aly, Eliwa, & Abd EL-Megid, 2019a;El-Beltagi, Mohamed, Mohammed, Zaki, & Mogazy, 2013).…”