Preparation of Zn-Gly and Se-Gly and Their Effects on the Nutritional Quality of Tea (Camellia sinensis).
Plants (Basel)
; 12(5)2023 Feb 25.
Article
in English
| MEDLINE | ID: covidwho-2268666
ABSTRACT
BACKGROUND:
Micronutrient malnutrition affects millions of people due to a lack of Zn and Se.METHODS:
The process conditions for the manufacture of glycine-chelated sodium selenite (Se-Gly) and zinc sulfate heptahydrate (Zn-Gly) were studied. The effects of ligand concentration, pH, reaction ratio, reaction temperature, and reaction time on fertilizer stability were assessed. The effects of Zn-Gly and Se-Gly on tea plants were determined.RESULTS:
Orthogonal experiments showed that the optimal preparation conditions for Zn-Gly (75.80 % Zn chelation rate) were pH 6.0, ligand concentration 4 %, reaction ratio 12, reaction time 120 min, reaction temperature 70 â. The optimal preparation conditions for Se-Gly (56.75 % Se chelation rate) were pH 6.0, ligand concentration 10%, reaction ratio 21, reaction time 40 min, temperature 50 â. Each chelate was completely soluble in water and verified by infrared spectroscopy and ultraviolet spectroscopy.CONCLUSIONS:
Zn-Gly and Se-Gly increased the Zn and Se content in tea plants, and foliar application was more effective than soil application. Combined application of Zn-Gly and Se-Gly was more effective than Zn-Gly or Se-Gly alone. Our findings suggest that Zn-Gly and Se-Gly provide a convenient method of addressing human Zn and Se deficiency.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Experimental Studies
Language:
English
Year:
2023
Document Type:
Article
Affiliation country:
Plants12051049
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