[1S02e] 02. AFOB - Part 3

6:05 PM - 6:15 PM JST(9:05 AM - 9:15 AM UTC)

[1AFOB-22] Nutrient-driven strategies to modulate acrylamide precursors in potato tuber

○Meher Nahid¹, Tuhin Suvra Roy, Mohammad Ali Zaber, Md Abdur Razzaque (1. Assistant Professor (Bangladesh))

Keywords:

Acrylamide precursors,Potato,Processing quality,Food safety

Process contaminant Acrylamide (AA) is a concerning issue prioritizing the mitigation technique in the potato processing industry. The management of nitrogen (N) and potassium (K) nutrients during potato cultivation plays an important role in minimizing AA precursors without compromising processing quality. The research aims to develop a balanced approach to N and K application in two potato cultivars, Asterix and Courage, in response to their roles in AA precursor formation, particularly glucose, fructose, sucrose, and amino acid content. Utilizing a split-split plot design experiment, N minimization (160, 140, and 120 kg N ha-1) coupled with K supplementation (132, 152, and 172 kg K ha-1) was studied for glucose, fructose, sucrose, and amino acids using High Performance Liquid Chromatography (HPLC) and an amino acid analyzer. N minimization (140 kg N ha-1) coupled with K supplementation (152 kg K ha-1) resulted in a notable decrease in glucose and fructose and reduced levels of amino acids, specifically asparagine. Among the 18 treatment combinations, the ratio of 140 kg N ha-1 and 152 kg K ha-1 demonstrated the lowest glucose (0.165 and 0.135 mg g-1 FW) and fructose (0.665 and 0.635 mg g-1 FW) and the highest sucrose (1.512 and 1.525 mg g-1 FW) content in the cultivars Asterix and Courage. Among the amino acid concentrations, the lowest asparagine (21.17 and 21.04 mg g-1 DW), glutamine (14.27 and 13.54 mg g-1 DW), proline (1.60 and 1.72 mg g-1 DW), glycine (2.16 and 1.90 mg g-1 DW), alanine (2.12 and 1.79 mg g-1 DW), and valine (2.02 and 1.57 mg g-1 DW) content were found in Asterix and Courage. Thus, the research findings provide valuable insight for achieving low AA precursor levels in Asterix and Courage through optimum management of N and K nutrients during cultivation.