Bio-Derived Phosphate Compound Fertilizer for Sustainable Agriculture

doi:10.19894/j.issn.1000-0518.240311

Chinese Journal of Applied Chemistry ›› 2025, Vol. 42 ›› Issue (11): 1472-1478.DOI: 10.19894/j.issn.1000-0518.240311

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Bio-Derived Phosphate Compound Fertilizer for Sustainable Agriculture

Ying YANG¹, Meng-Li GUO², Ji-Yao ZHOU², Ai-Ling LI²()

^1.College of Economics and Management，Southwest Forestry University，Kunming 650224，China
^2.Laboratory of Polymer Physics and Chemistry，Institute of Chemistry，Chinese Academy of Sciences，Beijing 100190，China

Received:2024-09-29 Accepted:2025-07-11 Published:2025-11-01 Online:2025-12-05
Contact: Ai-Ling LI
About author:liailing@iccas.ac.cn
Supported by:
the International Partnership Program of Chinese Academy of Sciences(027GJHZ2022033GC);the National Natural Science Foundation of China(22278415)

Abstract

Abstract:

Nitrogen， phosphorus， and potassium are three essential nutrients for crop growth. Phosphorus primarily originates from phosphate rock， however， high-grade phosphate resources are at risk of depletion due to their uneven distribution and growing demand. Moreover， low-grade phosphate ores often contain harmful impurities， making their processing expensive. Consequently， it is necessary to explore alternative phosphorus sources and develop phosphorus recycling. Phytic acid， a biologically derived organic phosphorus compound， exhibits a phosphorus content （P?O? mass fraction ＞60%） higher than that of high-grade phosphate ores. This study investigates the physicochemical properties of phosphate fertilizer solution derived from phytic acid and their effects on crop growth. Through nuclear magnetic resonance spectroscopy（NMR） and matrix-assisted lasear desorption/inoization time of flight（MALDI-TOF-MS） analysis， it was found that although phytic acid from different sources showed significant variations in chemical composition， primarily in the degree of inositol phosphate ester substitution， the resulting fertilizer complexes obtained through acid-base reactions exhibited similar structures， providing a basis for the large-scale utilization of industrial-sourced phytic acid. Pot experiments indicate that phytic acid-based phosphate fertilizer solution （PA from Shanghai Aladdin Biochemical Technology Co.， Ltd. and PC from Guangzhou Fufei Chemical Technology Co.， Ltd.） are more favorable for the initial growth of maize seedlings compared to blank controls. These fertilizers also enhance the hundred-grain weight， kernel number per spike， and total phosphorus content in wheat， contributing positively to phosphorus recycling efforts.

Key words: Phytic acid, Liquid fertilizer, Pot experiment, Fertilizer effect

CLC Number:

O645.1

Ying YANG, Meng-Li GUO, Ji-Yao ZHOU, Ai-Ling LI. Bio-Derived Phosphate Compound Fertilizer for Sustainable Agriculture[J]. Chinese Journal of Applied Chemistry, 2025, 42(11): 1472-1478.

Figures/Tables 6

Fig.1 Scheme of liquid compound fertilizer from phytic acid

Fig.2 31P NMR （A）， MALDI-TOF-MS （B） and phosphorus mass fraction （C） of PA， PB， PC and PD phytic acid

Table 1 The molar fractions of 6-， 5- and 4-substituted inositol phosphate in different sourced phytic acids

Sample	x（6-substituted）/%	x（5-substituted）/%	x（4-substituted）/%
PA	58.3	37.3	4.4
PB	3.3	86.6	10.1
PC	1.7	86.2	12.1
PD	2.8	74.6	22.6

Fig.3 （A） The optical photo of phosphate fertilizer solution from different phytic acid and commercial fertilizer，（B） FT-IR spectra of phosphate fertilizer solution from different phytic acid and phytic acid and （C） XRD curves of phosphate fertilizer solution from different phytic acid

Fig.4 Effects on maize growth for phosphate fertilizer solution from different phytic acid

Table 2 Effects on wheat yield for phosphorus fertilizer solution from different phytic acid

Sample	Hundred-grain mass/g	Kernels per spike/grain	Total P/（μg·g^-1）
PA phosphate fertilizer	5.9±0.5	34.7±3.1	62.19
PB phosphate fertilizer	4.4±0.3	16.3±2.9	58.78
PC phosphate fertilizer	6.1±0.7	38.3±3.1	59.01
PD phosphate fertilizer	4.7±0.7	17.0±6.7	38.58
Commercial fertilizer	4.5±0.8	20.3±3.8	27.59
Control	5.3±0.8	31.7±1.8	39.63

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Bio-Derived Phosphate Compound Fertilizer for Sustainable Agriculture

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