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Zhang Cong

Bio: Zhang Cong is an academic researcher. The author has contributed to research in topics: Recrystallization (geology) & Acacetin. The author has an hindex of 1, co-authored 1 publications receiving 6 citations.

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TL;DR: In this paper, the chemical constituents of Chrysanthemum indicum L were investigated by column chromatography on silica gel and Sephadax LH-20 and purified by recrystallization.
Abstract: ObjectiveTo investigate the chemical constituents of Chrysanthemum indicum LMethods: Isolated by column chromatography on silica gel and Sephadax LH-20,and purified by recrystallization Their structures were determined on the basis of the physicochemical properties and spectral dataResults:Thirteen compounds were isolated and identified as acacetin(1),tuteolin(2),apigenin (3),eupatilin(4),tricin(5),5,7,3',4'-Tetrahydroxy-6,5 '-dimethoxyflavone(6),apigenin7-O-β-D-glucopyranoside (7),luteolin-7-O-β-D-glucopyranoside(8),linarin(9),cumambrin-A (10),yejuhua lactone(11),7-(2-hydroxy-2-propyl)-10-methyl-4-methyleneperhydronaphthalene-3, 5,6-triol(12),β-daucosterol(13)Conclusion:Compound 4~7 were obtained from this plant for the first time,and compound 5,6 were obtained from genus chrysanthemum for the first time

6 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, an ultrasonic-assisted extraction (UAE) strategy for optimizing simultaneous quantitative analysis of eight bioactive compounds in Chrysanthemi flos was developed by using response surface methodology (RSM) combined with HPLC-DAD analysis.

66 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of different drying processes on the bioactive chemical contents and antioxidant activities of chrysanthemum were examined, and the results showed that oven-drying had faster drying rate.

52 citations

Journal ArticleDOI
TL;DR: F foliar spray of nano silicon combined with soil addition of gypsum was the best effective and economic treatment recommended for mitigating the harmful effect of salinity stress on Jatropha plants irrigated with saline water at concentration up to 4000 ppm.
Abstract: An open field experiment was carried out during 2015 and 2016 seasons at the experimental nursery of the Ornamental Horticulture Department, Faculty of Agriculture, Cairo University, Egypt. The purpose of present research was to investigate the effect of foliar application of nano silicon with different concentrations and gypsum soil application on growth, flowering and chemical constituents of Jatropha integerrima plants irrigated with different levels of saline water. The concentrations of saline water were (1000, 2000 and 4000 ppm), in addition to tap water (270 ppm) as a control, simultaneously plants were received monthly foliar application of nano silicon 1 and 2 mM or soil application of gypsum at 20 g/plant, either applied individually or in combination. The results showed that, elevating salt concentration in irrigation water decreased vegetative growth characteristics, flowering traits, leaves anatomy and chemical constituents. In contrast, increasing salinity of irrigation water boosted contents of proline, Ca%, Na%, Cl%, total phenolic and flavonoids. On the other hand, foliar application of nano silicon and soil addition of gypsum treatments either individually or in combination had favorable effects on enhancing vegetative parameters and chemical constitutes, meanwhile decreasing accumulation of Na%, Cl%, total phenolic and flavonoids in leaves. It can be concluded that, foliar spray of nano silicon combined with soil addition of gypsum was the best effective and economic treatment recommended for mitigating the harmful effect of salinity stress on Jatropha plants irrigated with saline water at concentration up to 4000 ppm.

18 citations

Journal ArticleDOI
TL;DR: Plants treated with biostimulant had significantly higher values for all morphological parameters investigated, while significantly higher concentrations of K+ were recorded in begonia roots and above-ground plant parts, whileificantly higher concentration of total N, K+, Ca2+ and Mg2+ wererecorded inAbove-ground parts of biostIMulant-treated plants.
Abstract: Begonia (Begonia semperflorens Link et Otto) belongs to a group of annual plants that are commonly grown in city parks, mainly due to their wide colour options and adaptability to grow either in full sun or semi-shade. Good quality of begonia transplants for early planting outdoors can sometimes be hard to achieve, due to unfavourable conditions early in the season, such as low temperatures leading to insufficient nutrient uptake and plant growth. The aim of this study was to investigate the use of biostimulants for improving the conditions for raising transplants for early outdoor planting. The experiments were conducted in a non-heated glasshouse and were set up as a split plot design with treated and untreated plants in 2009, 2010 and 2011. In each year, the treatment with biostimulant Radifarm®, in a concentration of 0.25% (Valagro SpA, Italy) was applied weekly for two months, while control plants were treated with water. At the end of experiment, the following parameters were recorded: fresh...

13 citations

Journal ArticleDOI
31 Mar 2020
TL;DR: The HA treatment was the most effective in enhancing most of the studied parameters and might be recommended for enhancing the vegetative growth, yield of calyx, and calyx phytochemical components of Roselle plants under the environmental conditions of Bader region, El-Beheira Governorate and other similar regions.
Abstract: Field experiments were carried out during the two successive summer seasons of 2015/2016 and 2016/2017. The experiments were accomplished in an open field located at Bader region, El-Beheira Governorate, Egypt to evaluate the effects of humic acid, indole butyric acid (IBA), and arbuscular mycorrhizal fungi (AMF) (Glomus mosseae) individually on vegetative growth, yield, and phytochemical characteristics of Hibiscus Sabdariffa (Roselle jamica). Experimental field plots were designed as randomized complete block design (RCBD). The obtained results of the two seasons, generally, showed that all treatments (HA, IBA, and AMF) individually enhanced the vegetative growth, yield of calyx, and phytochemical parameters of Roselle plants. The HA treatment was the most effective in enhancing most of the studied parameters and might be recommended for enhancing the vegetative growth, yield of calyx, and calyx phytochemical components of Roselle plants under the environmental conditions of Bader region, El-Beheira Governorate and other similar regions.

6 citations