Page 85 - 《精细化工》2021年第6期
P. 85
第 38 卷第 6 期 精 细 化 工 Vol.38, No.6
202 1 年 6 月 FINE CHEMICALS June 2021
功能材料
多肽与多肽螯合铁叶面肥的制备及应用
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刘国强 1,2 ,强涛涛 1,2* ,王明华 ,郭 悦 1,2 ,王 琳 1,2
(1. 陕西科技大学 轻工科学与工程学院,陕西 西安 710021;2. 陕西科技大学 轻化工程国家级实验教
学示范中心,陕西 西安 710021;3. 滨州职业学院,山东 滨州 256600)
摘要:以明胶蛋白为原料,采用酸法制备了多肽叶面肥(Pep),再以 Pep 为螯合剂,硫酸亚铁为铁源,抗坏血
酸为抗氧化剂,吐温-80(质量分数 1%)为表面活性剂,制备了多肽螯合铁叶面肥(Pep-Fe)。以多肽褐变、氨
基氮含量和螯合率为指标,优化出制备 Pep 及 Pep-Fe 的反应条件。采用 SEM、TG、XRD、元素分析和原子吸
收光谱对 Pep 和 Pep-Fe 的结构和形貌进行了表征,并将其用于苏州青小油菜的种植。结果表明,温度 70 ℃、
反应时间 7 h、m(明胶蛋白)∶m(水)=1∶6、m(明胶蛋白)∶m(浓硫酸)=1.00∶1.25 条件下,制备的 Pep 不会发生
褐变且氨基氮含量为 125.49 g/L;温度 50 ℃、反应时间 1.5 h、pH=4、m(Pep)∶m(硫酸亚铁)=2∶1 条件下,制
备的 Pep-Fe 的螯合率为 53.89%。
关键词:多肽;多肽螯合铁;螯合;叶面肥;功能材料
中图分类号:TQ440.7 文献标识码:A 文章编号:1003-5214 (2021) 06-1147-08
Preparation and application of polypeptide foliar fertilizer and
polypeptide chelated iron foliar fertilizer
1,2
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1,2
1,2
LIU Guoqiang , QIANG Taotao 1,2* , WANG Minghua , GUO Yue , WANG Lin
(1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an
710021, Shaanxi, China; 2. National Demonstration Center for Experimental Light Chemistry Engineering Education,
Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China; 3. Binzhou Polytechnic, Binzhou 256600,
Shandong, China)
Abstract: Polypeptide foliar fertilizer (Pep) was prepared from gelatin protein by acid method. Then
polypeptide chelated iron foliar fertilizer (Pep-Fe) was prepared by using Pep as chelating agent, ascorbic
acid as antioxidant, tween-80 (mass fraction 1%) as surfactant and iron sulfate as iron source. The reaction
conditions for the preparation of Pep and Pep-Fe were optimized based on polypeptide browning, amino
nitrogen content and chelating rate. The structure and morphology of Pep and Pep-Fe were characterized by
SEM, TG, XRD, organic element analyzer and atomic absorption spectrometer. Pep and Pep-Fe were then
used for planting of Brassica campestris (Suzhouqing). The results showed that the optimum reaction
conditions were obtained as follows: temperature 70 ℃, reaction time 7 h, m(gelatin protein)∶
m(water)=1∶6, m(gelatin protein)∶m(concentrated sulfuric acid)=1.00∶1.25. Under these conditions, the
prepared Pep did not turn brown and the amino nitrogen content was 125.49 g/L. Under the conditions of
temperature 50 ℃, reaction time 1.5 h, pH=4, m(Pep)∶m(iron sulfate)=2∶1, the chelating rate of Pep-Fe
was 53.89%.
Key words: polypeptide; polypeptide chelated iron; chelating; foliar fertilizer; functional materials
[1]
2019 年 , 中 国规模以上 轻革产量达 到了 也制造出大量的废弃物 。这些废弃物中含有丰富
2
8
5.74×10 m ,占世界总量的 1/4。制革业作为中国轻 的胶原蛋白,若遗弃到自然中不仅会造成环境污染,
[2]
工业的支柱产业,在促进中国社会经济发展的同时, 还会浪费大量资源 。许多研究者开始尝试将低廉
收稿日期:2020-11-23; 定用日期:2021-01-20; DOI: 10.13550/j.jxhg.20201085
基金项目:陕西省重点科技创新团队(2020TD-009);陕西高校青年创新团队
作者简介:刘国强(1991—),男,硕士生,E-mail:540982632@qq.com。联系人:强涛涛(1980—),男,教授,E-mail:qiangtt515@
163.com。