Author(s)

Ablé Anoh Valentin, N’Guessan Boka Robert, Bamba El Hadji Sawaliho^*

Laboratoire de Constitution et de Réaction de la Matière, UFR SSMT, Université Félix Houphouët-Boigny, Abidjan, Côte d’Ivoire.

The research aims to help reduce the enormous post-harvest losses of rice or bananas in Cote d’Ivoire. It focuses on the breakdown mechanism of their starch. This process contributes to their decay. This study wants to elucidate it; to do this, it analyzes the tetra or penta saccharide reactions with the water or dioxide carbon. It calculates the geometric, energetic and spectroscopic parameters at the ONIOM level (B3LYP/6-311++G [d, p]: AM1). These quantities allow establishing that oxygen  represents the privileged hydrogen bond (HB) site for amylose with four or five D-glucose building blocks. They suggest   and   are respectively those of amylopectin when the latter consists of four and five D-glucose synthons. They prove that amylose deteriorates before it; the degradation of starch begins with its alteration into disaccharides. It continues with that of amylopectin into tri or tetra-saccharides with four or five building blocks.

Hydrogen Bonds, Glucose, Amylose, Amylopectin

Valentin, A. , Robert, N. and Sawaliho, B. (2021) Hydrogen Bonds Sites of Amylose or Amylopectin from Starch at the ONION Level (B3LYP/6-311++G [d, p]: AM1). Computational Chemistry, 9, 85-96. doi: 10.4236/cc.2021.91005.