Oxidative enzymes activity in sugarcane juice as a function of the planting system

Abstract

In Brazil, the largest producer of sugarcane in the world, the industrial process transforms this crop into ethanol and/or granulated sugar. Some cultivars exhibit enzymatic browning in the extracted sugarcane juice at levels harmful to the manufacturing process of white granulated sugar. The objective of this study was to assess the effect of sugarcane straw used as soil coverage, the use of different planting systems, and treatments with hydrogel polymer on enzymatic activity. The cultivar RB 86 7515 was sampled for 8 months; the first sample was obtained by cutting the upper portion of the stalk at the internode, which was taken to the laboratory for determination of the enzymatic activity of polyphenoloxidase (PPO) and peroxidase (POD). The soil coverage with different forms of straw as well as the planting systems did not change the enzymatic activity of polyphenoloxidase (PPO) and peroxidase (POD). The polyphenoloxidase (PPO) activity increased with the use of a polymer due to increased polyphenoloxidase (PPO) activity in the groove system. The enzymes studied showed changes in activity during the experimental period. The production of sugar at the end of the season (August to November) avoids the periods of highest enzymatic activity.

Effect of pulsed electric field (PEF) treatment on sugarcane juice

“…100 mL of sugarcane juice provides 40 Kcal of energy, 10 mg of iron and 6 μg of beta carotene (Parvathy 1983). It is rich in enzymes both polyphenoloxidase (PPO) and peroxidase (POD) and has many medicinal properties providing water (75-85 %), reducing sugar (0.3-3.0 %), and nonreducing sugar (10-21 %) (Marques et al 2013). Sugarcane juice is a great preventive and healing source for sore throat, cold and flu.…”

Produção e efeitos do uso de hidrogel natural na cultura do alface

“…De acordo com Marques et al (2013), o hidrogel também aumenta a porosidade total, não afetando a disponibilidade hídrica e proporciona aumento do volume de água de reserva do substrato, favorecendo o melhor desempenho da parte aérea das plantas.…”