Department of Agri-Food Engineering and Environmental Management, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45E, 15-351, Bialystok, Poland.
Department of Biology and Plant Ecology, Faculty of Biology, University of Bialystok, Ciolkowskiego 1J, 15-245, Bialystok, Poland.
Sci Rep. 2024 Mar 21;14(1):6808. doi: 10.1038/s41598-024-57524-x.
Utilizing the organic fraction of agri-food industry waste for fertilization represents one approach to waste management, with composting emerging as a popular method. Composts derived from this waste may contain plant hormones alongside primary macronutrients. This study aimed to evaluate the content of plant hormones in composts crafted from the organic fraction of agri-food industry waste. The presence of these substances was ascertained using liquid chromatography-mass spectrometry (LC-MS) analysis, applied to extracted samples from three composts produced in a bioreactor and three obtained from companies. The results indicate the presence of 35 compounds, which belong to six types of plant hormones: auxins, cytokinins, gibberellins, brassinosteroids, abscisic acid, and salicylic acid, in composts for the first time. The highest amount of plant hormones was noted in buckwheat husk and biohumus extract (35 compounds), and the lowest in hemp chaff and apple pomace (14 compounds). Brassinosteroids (e.g., brassinolide, 28-homobrassinolide, 24-epicastasterone, 24-epibrassinolide, and 28-norbrassinolide) and auxins (e.g., indolilo-3-acetic acid) are dominant. The highest concentration of total phytohormones was reported in biohumus extract (2026.42 ng g dry weight), and the lowest in organic compost (0.18 ng g dry weight).
利用农业食品工业废物的有机部分进行施肥是一种废物管理方法,堆肥作为一种流行的方法而出现。这些废物衍生的堆肥可能含有植物激素以及主要的大量营养素。本研究旨在评估由农业食品工业废物的有机部分制成的堆肥中的植物激素含量。使用液相色谱-质谱(LC-MS)分析,对来自生物反应器中生产的三种堆肥和三家公司获得的三种堆肥的提取样品进行分析,以确定这些物质的存在。结果表明,在堆肥中首次发现了 35 种属于六种类型植物激素的物质:生长素、细胞分裂素、赤霉素、油菜素内酯、脱落酸和水杨酸。荞麦皮和生物腐殖质提取物中植物激素含量最高(35 种),麻屑和苹果渣中含量最低(14 种)。油菜素内酯(如油菜素内酯、28-高油菜素内酯、24-表育甾酮、24-表油菜素内酯和 28-降油菜素内酯)和生长素(如吲哚-3-乙酸)为主导。生物腐殖质提取物中的总植物激素浓度最高(2026.42ng g 干重),而有机堆肥中的浓度最低(0.18ng g 干重)。