Effects of phenotype and wet milling procedures on the starch isolation from sorghum (<i>Sorghum bicolor L. Moench</i>) grains

Badreddine Belhadi; Rachid Souilah; Redha Ould-Kiar; Mohamed Yousfi; Djaafar Djabali; Boubekeur Nadjemi; Badreddine Belhadi; Rachid Souilah; Redha Ould-Kiar; Mohamed Yousfi; Djaafar Djabali; Boubekeur Nadjemi

doi:10.3934/agrfood.2021026

AIMS Agriculture and Food

2021, Volume 6, Issue 2: 448-461. doi: 10.3934/agrfood.2021026

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Research article

Effects of phenotype and wet milling procedures on the starch isolation from sorghum (Sorghum bicolor L. Moench) grains

1.
Équipe: Valorisation de la Biomasse, Laboratoire d'étude et de développement des techniques de traitement et d'épuration des eaux et de gestion environnementale (LEDTEGE), Ecole Normale Supérieure, Bp 92, vieux kouba, Algiers, Algeria
2.
Département du tronc commun sciences et technologie, Faculté de technologie, Université Amar Telidji, BP 37, G 03000, Laghouat, Algeria
3.
Faculté des sciences de la nature et de la vie et sciences de la terre et de l'univers, Université de Bordj Bou Arréridj El-Anasser, 34030, Algeria
4.
Laboratoire des Sciences Fondamentales, Université Amar Telidji, BP 37, G 03000, Laghouat, Algeria

Received: 18 November 2020 Accepted: 18 February 2021 Published: 02 March 2021

The current study tends to introduce the effects of three wet milling procedures and sorghum (Sorghum bicolor L. Moench) phenotype on starch recovery and some physico-chemical properties of starch isolated from grains. It explores the sorghum grains from landraces, cultivated in the Sahara of Algeria, which in fact has a high percentage of total starch with a little percentage of tannin compared to many regions of the world. This study attempts to unveil that the starch recovery, of fifteen starch isolates, ranged between 58.06% and 83.11%, and their total starch and protein contents ranged from 92.01% to 98.75% and 0.35% to 2.34% respectively. The extents kinetic curves of hydrolysis indicates that starch isolates have high susceptibilities for hydrolysis to glucose by glucoamylase from Aspergillus niger, and the degree of hydrolysis ranges from 50.85% to 81.45%. The results demonstrate that the wet milling procedures affect the starch recovery, and protein content and swelling power at 85 ℃ of starch isolates. The effect of grain phenotype appears in moisture content and swelling power at 95 ℃.
- grain quality,
- starch isolation,
- physico-chemical properties,
- sorghum (Sorghum bicolor L. Moench) landraces
Citation: Badreddine Belhadi, Rachid Souilah, Redha Ould-Kiar, Mohamed Yousfi, Djaafar Djabali, Boubekeur Nadjemi. Effects of phenotype and wet milling procedures on the starch isolation from sorghum (Sorghum bicolor L. Moench) grains[J]. AIMS Agriculture and Food, 2021, 6(2): 448-461. doi: 10.3934/agrfood.2021026

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Abstract

The current study tends to introduce the effects of three wet milling procedures and sorghum (Sorghum bicolor L. Moench) phenotype on starch recovery and some physico-chemical properties of starch isolated from grains. It explores the sorghum grains from landraces, cultivated in the Sahara of Algeria, which in fact has a high percentage of total starch with a little percentage of tannin compared to many regions of the world. This study attempts to unveil that the starch recovery, of fifteen starch isolates, ranged between 58.06% and 83.11%, and their total starch and protein contents ranged from 92.01% to 98.75% and 0.35% to 2.34% respectively. The extents kinetic curves of hydrolysis indicates that starch isolates have high susceptibilities for hydrolysis to glucose by glucoamylase from Aspergillus niger, and the degree of hydrolysis ranges from 50.85% to 81.45%. The results demonstrate that the wet milling procedures affect the starch recovery, and protein content and swelling power at 85 ℃ of starch isolates. The effect of grain phenotype appears in moisture content and swelling power at 95 ℃.

References

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