RSUSSH 2020

IN20-183 Holding capability of different coating material on protease and cellulase in shrimp feed preparation

Presenter: Nisachon Uniyom
Kasetsart University, Thailand

Abstract

       The aquaculture becomes more potential for the world food supply chain; therefore, the main ingredients like fishmeal are necessary for feed manufacturing. Nonetheless, there is IUU law to control the usage of fishmeal so that fishmeal replacement materials introduced to the market. The plant protein-based is the most well-known raw materials. However, there is contain a high level of fiber (cellulose) and un-usable peptide, which was bound in phytate; thereby, the enzyme becomes a vital feed additive. On the other hand, there is a limitation of aquaculture feed production, which normally applied with high temperature, and the heat can diminish enzyme ability. The study is designed to find the solution of using an enzyme in aquaculture feed by coating materials. The abilities of individual coating materials, including chitosan, Seal 4 (commercial product), pullulan, and CMC, are observed on protease and cellulase leaching. The result shows the less leaching of protease are coated by pullulan, and CMC and with 0.200% and 0.210%, respectively. CMC is not a suitable material coating for cellulase because cellulose-based materials were destroyed. As a consequence, Seal 4 and pullulan are more efficient for cellulase.

Keywords: Protease; Cellulase; Feed; Aquaculture; Chitosan; Pullulan; CMC; Seal 4; Coating

Citation format:

Uniyom, N., Chumkam, S., & Jintastaporn, O.. (2020). Holding capability of different coating material on protease and cellulase in shrimp feed preparation. Proceeding in RSU International Research Conference, May 1, 2020. Pathum Thani, Thailand.

QUESTIONS & ANSWERS

Sakunrat Boonjing (Participant)

-How did you preparation the sample for coating materials in shrimp feed?
Thank you.

Nisachon Uniyom (Presenter)

Preparation of coating materials

Coating materials were 5% chitosan (VIV Interchem Co.,LTD), 12.5% Seal 4 (Pathway Intermediates Thailand), 3% Pullulan (MyskinRecipe) and only 2% Carboxymethyl cellulose or CMC (Chemipan) soluted in 3% acetic acid. For coating sample, 50 g of shrimp feed were weighted and mixed with enzyme and 1 ml of coating materials in different treatments. The study was divided into 8 treatments namely 1. feed+chitosan, 2. feed+Seal 4, 3. feed+pullulan, 4. feed+CMC, 5. feed+enzyme +chitosan, 6. feed+enzyme+Seal 4, 7. feed+enzyme +pullulan, 8. feed+enzyme+CMC. Two different enzyme namely protease in powder form (AB vista, UK) and cellulase in liquid form (Jefo Nutrition Inc., Canada) were used in the experiment. After that feeds are dried for 30 min for leaching test, 10 g of feed are soaked in 30 ml of distilled water.