Phenolics and ascorbic contents in two sage (Salvia sps. l) species

© 2020, Editorial board of Journal of Experimental Biology and Agricultural Sciences. All rights reserved. This work was carried out for the quantitative estimation of phenolic compounds (soluble phenolic compounds, flavonoids such as quercetin, cynaroside, and avicularin) and ascorbic acid level in the aerial plant parts (leaves and stems) of two sage species viz., Salvia tesquicola (dry-steppe sage) and Salvia verticillata (lilac sage) grown in Tatarstan and Crimea, Kazan, Russia respectively. The highest content of phenolic compounds and the ascorbic acid level was reported in the leaves, while the value of these chemical constitutes was lowest in the stems of both species. Further, it has been shown, that these plants are rich in all investigated chemicals but among these Cynaroside and avicularin are the predominated flavonoids (cynaroside, quercetin, and avicularin). The amount of all studied active compounds differed significantly and it depends on the plant organs, species, and place of growth. Further, the results of the study revealed that the content of soluble phenolic compounds in sage plants did not depend on the species and place of growth while the growing conditions had a greater impact on the amount of flavonoids and vitamin C contents

Effect of potassium humate and growth stage on phenolic compound and vitamin C accumulation in kale (Brassica oleracea var. sabellica)

Kale is one of the top economically valuable crops in the world because of its high antioxidant content. Research shows that the antioxidant profile of Brassica crops varies with growth stages due to soil fertility, temperature, light and other agronomic factors. This study aimed to analyze the effect of potassium humate on phenolic compound content, the greatest contributor to the antioxidant properties of the highest-ranking superfood kale (Brassica oleracea var. sabellica). Our results showed that potassium humate at different growth stages elicited phenolic compounds in the studied samples. Leaves of 22 weeks old plants accumulated phenolic compounds about two times higher than those of 7 weeks old plants. Vitamin C content was increased by potassium humate treatment at 7 weeks. At 22 weeks levels in controls and treated kale leaves did not significantly differ

The influence of soil-climatic conditions of growth on the content of phenolic compounds in trifolium l. Plants

© 2020, Editorial board of Journal of Experimental Biology and Agricultural Sciences. All rights reserved. The current study was carried out to study the effect of growing conditions on the pharmaceutically promising biologically active phenolic compounds on the meadow clover plants. The impact of the plant development site on the contemplated mixes was additionally explored. The estimation of phenolic compounds in raw plant materials was carried out with the help of a spectrophotometer and photocolorimeter. Results of the study revealed that the place of plant growth conditions have remarkable effect on the content of the phenolic compounds. Further, the most ideal conditions available for clover plant growth and higher phenolic compounds were reported from the broad-leaved forests. Furthermore, the results also suggested that the most important elements which affecting the aggregation of phenolic compounds are soil nitrogen

Effect of soil and growth climatic conditions on vitamin content of red clover (Trifolium pratense L.)

© 2020, Editorial board of Journal of Experimental Biology and Agricultural Sciences. All rights reserved. The current study was conducted to estimate the effect of soil and growth climatic conditions on the vitamin content of red clover (Trifolium pratense L.). Further, in vitamins, the content of ascorbic acid and vitamin A (provitamin – carotene) was estimated from the aerial parts of the clover. Ascorbic acid is a powerful antioxidant, antiviral, and antitumor vitamin while vitamin A is a useful vitamin for eyesight. Ascorbic acid content in the red clover tissues was determining potassium hexacyanoferrate method while Provitamin A and total carotenoid was estimated by spectrophotometric method. Results of the study revealed that the highest content of vitamins C was found in the plant grown under the climatic conditions of the southern taiga subzone of the Atninsky and in the zone of deciduous forests (Apastovsky and Kamsko-Ustinsky districts) while the plant is grown under the coniferous-deciduous forests (Zelenodolsky district) climatic conditions are a rich source of vitamin A. From the results of the study, it can conclude the soil and growing conditions especially temperature regime and soil moisture affected the level of vitamins in red clover

Cabbage kale – a new functional food product: Growing conditions and regulation of the phytochemical composition

© 2020, Editorial board of Journal of Experimental Biology and Agricultural Sciences. All rights reserved. The purpose of this work was to evaluate the specific effects of natural growth hormones (gibberellic acid, 10-6М and brassinolide, 10-6М) and commercial growth bio-stimulator (Novosil, 5 g/ha) on the enzymatic and non-enzymatic antioxidants activities of cabbage kale plants, under different growing conditions. The treatment of growth regulators was imposed by soaking cabbage kale plant seed in various growth regulators for 24 hours. The results were recorded at 85, 115 and 145 days after planting, at +80С, 00С and-60С temperature, respectively. Among the studied growth regulators, terpenoidal compounds of Novosil and gibberellic acid improved the antioxidant activity, activating enzymatic antioxidant systems and increasing the content of carotenoids and proline in leaves of cabbage kale. The steroidal compound of brassinolide raises the content of phenolic and flavonoids compounds which increased antioxidant activities. The results obtained from the study indicated that the use of growth regulars increases the synthesis of protective compounds, which developed resistance of cabbage kale plants against adverse environmental factors and improve the biomedical properties of cabbage kale. Further, the results of the study also suggested that freezing temperatures (-60С) enhanced the protective effect of growth regulators against lipid peroxidation and their antioxidant activity

Stevioside Has the Maximum Biological Activity among Natural Stevia Diterpenes

© 2020, Pleiades Publishing, Ltd. Abstract: The concentrations of steviol and its derivatives stimulating the growth of wheat plants were measured: 10–8 for stevioside and 10–9 М for steviol and isosteviol. It was found that stevioside increased the activity of amylolytic enzymes and protein content, as well as frost tolerance of the roots of wheat seedlings. Thus, stevioside can be recommended for the development of complex phytopreparations for stimulating the growth processes and increasing the resistance of wheat plants to low temperatures

Changes in Hormonal Status and Expression of Lectin Genes in Wheat Seedlings Treated with Stevioside and Exposed to Low Above-Zero Temperatures

© 2020, Pleiades Publishing, Ltd. Abstract: Effect of presowing treatment with stevioside (10–8 M) on activity, content, and expression of the wheat-germ agglutinin (WGA) gene, as well as the content of phytohormones, was studied in 4-day-old seedlings of wheat (Triticum aestivum L.) exposed to low above-zero temperatures. Pretreatment with stevioside considerably increased the protective potential of plants in response to low-temperature stress. The obtained results point to an ABA-dependent effect of stevioside on WGA in spite of the gibberellin-like chemical structure of the examined growth regulator

Dititanium-Containing 19-Tungstodiarsenate(III) [Ti2(OH)2As2W19O67(H2O)]8-: Synthesis, Structure, Electrochemistry, and Oxidation Catalysis

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