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Zeinab A. Abd Elhafez

Publications (7)

Effect of a Natural Growth Stimulant (Ascobein) on Growth and Yield of Seeds and Oil of Nigella sativa Plants

Zeinab A. Abd Elhafez, Abeer M. Shehata & Adel F. Ahmed · European Journal of Medicinal Plants · 2022

The importance of Nigella sativa plant is increasing day by day in many medical and nutritional fields, and the demand for it is increasing in foreign markets. Therefore, we chose the nigella plant to study the effect of spraying with a natural growth stimulant (Ascobein) at conc...

Open access Research Article 10.9734/ejmp/2022/v33i111105

Chemical Composition Changes of Main Active Components Accompanying the Conversion of Some Essential Oils (EO) into Essential Oils Nanoemulsion (EONE)

Zeinab A. Abd Elhafez · Asian Journal of Agricultural and Horticultural Research · 2022

Four essential oils [Sweet Basil (Ocimum basilicum L, Fam: Lamiaceae), Geranium, (Pelargonium graveolens, Fam: Geraniaceae), Lemongrass (Cymbopogon citratus, Fam: Poaceae) and Peppermint (Mentha piperita L. Fam: Lamiaceae)] were selected to be converted into essential oil nanoemu...

Open access Research Article 10.9734/ajahr/2022/v9i4198

Comparative Analysis of Genetic Variation and Chemical Variability in Commonly Available Egyptian and Chinese Garlic

Zeinab A. Abd Elhafez & Omneya F. Abu El-Leel · Asian Journal of Biotechnology and Genetic Engineering · 2022

Three garlic varieties (Sids 40, Sids 50 and Chinese) comparisons of oil composition and genetic variation of three garlic cultivars (Allium sativum L.) commonly used for cooking, pharmaceutical industries and essential oil production in the Egyptian market. Garlic essential oils...

Open access Research Article

The Effect of Different Extraction Methods (Steam Distillation and Supercritical Fluid Extraction) on Essential Oil Production of Aromatic Tagetes and Sweet Basil

Zeinab A. Abd Elhafez · European Journal of Medicinal Plants · 2022

Tagetes minuta L. (Aromatic Tagetes) is an erect and stout summer annual herb. Ocimum basilicum L. (Sweet Basil) is considered a summer aromatic plant. There are several methods for extraction of essential oils i.e. (HD) hydro-distillation, (SD) steam distillation, (SFE) supercri...

Open access Research Article 10.9734/ejmp/2022/v33i630468

Influence of Some Solvents on the Extraction of Major Phenolic Compounds and their Antioxidant Activities in Egyptian Garlic (Allium sativum L.)

Zeinab A. Abd Elhafez · Asian Journal of Agricultural and Horticultural Research · 2021

Garlic Allium sativum L. belongs to the family Alliaceae. Garlic has many nutritional and medicinal uses. There are several solvents for extraction of bio actives i.e. Acetone, Ethanol...etc. The present study is aimed to compare the four solvents (acetone, ethanol, hexane and me...

Open access Research Article 10.9734/ajahr/2021/v8i430149

A Comparative Study of the Response of Fennel (Foeniculum vulgare, Mill) Plants from Egypt and China to Spraying with Benzyladenine (BA)

Adel F. Ahmed, Zeinab A. Abd Elhafez & Abeer M. Shehata · European Journal of Medicinal Plants · 2022

Fennel plant (Foeniculum vulgare, Mill.) is one of most widely used plants in food and medicine. Our study aimed to show the response of fennel plants from Egypt and China planted in Egypt to foliar application of benzyladenine (BA) at various concentrations; control, 50, 100 and...

Open access Research Article 10.9734/ejmp/2022/v33i111104

Effect of Different Drying Methods and Storage Time on Quality of Roselle Calyxes (Hibiscus sabdariffa L.) Plants

Hanem, A. Abd Elghany, Zeinab A. El Swaify & Zeinab A. Abd Elhafez · Asian Journal of Research in Medical and Pharmaceutical Sciences · 2022

This research was conducted during the 2018 and 2019 seasons, and the aim of the research was to study the effect of each of the different drying methods (drying in the shade, direct sunlight, electric ovens, and solar dryer) and the different storage periods (0, 2, 4 and 6 month...

Open access Research Article 10.9734/ajrimps/2022/v11i430194