Crude Fiber Tester for Determination of Coarse Fibers in Coconuts

Coconut belongs to the genus Palmiaceae, and it is one of the major woody oil crops in the tropical and subtropical regions. It is also one of the best fruits of tropical and subtropical tourism and has an economic life of more than 70 years. The subtropical Hainan province is rich in coconuts all year round. It is one of the specialties in Hainan Province. In order to better develop and utilize coconuts, the moisture, crude fat, crude protein, and crude fiber content of semi-mature coconut peels were measured using conventional methods to provide reliable data for the development and utilization of coconut pericarp processing. The coarse fiber analyzer can determine the fiber content.

Use an ordinary balance to weigh 2 to 5009 samples of water in an enamel plate of known weight and place it in an oven of 65±2°C. After 30 to 32 hours of sample drying, remove the enamel plate from the oven. Take it out, place it in the room and cool it for 24 hours, and make the moisture in the sample (ie air-dried sample) balance with the humidity in the room and weigh it. Then put it in the oven to dry until the difference between two consecutive times does not exceed o, 59.

Place the sample in the flask of the condensing unit and add 2% (X) rnL of sulfuric acid solution with a concentration of exactly 0.25N and 1 part of n-octanol, and immediately heat it. It should be allowed to boil within 2 minutes. And continuous micro-boiled minutes, pay attention to maintaining the same concentration of sulfuric acid, the sample should not leave the solution stuck to the beaker wall (can add boiling distilled water). It is then filtered, washed with boiling distilled water until acid-free, and the insolubles are removed and placed in the original container. The concentration is exactly as it has been boiled with sodium hydroxide solution 2 (X) rnL, likewise micro-boiling for minutes.

The above boiling liquid was taken off by a crude fiber measuring instrument, immediately placed in an Asbestos-covered Gu's melting pot and suction-filtered, first washed with a sulfuric acid solution of 25 ml, and then washed with boiling distilled water until the washing liquid was neutral, with ethanol. Cleverly, wash the residue with mL, and then put the Gu's pot and residue into an oven, dry at 130° C. and 2° C. for 2 hours, cool in a desiccator to room temperature, and weigh. It was then placed in a high-temperature furnace of 550° C. 25° C. for 30 minutes, and weighed after being cooled to room temperature in a desiccator.

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