Which method is used for determination of moisture content?
The primary methods used are loss on drying and Karl Fischer titration. There are many methods for determination of moisture content. The primary methods used are loss on drying and Karl Fischer titration.
What is moisture content in proximate analysis?
The Moisture content is considered to be the mass proportion of a sample that is lost when the sample is dried overnight at 105 degrees celsius.
What are other methods available for the determination of moisture content in crude drugs and its significance?
Various methods for moisture determination are loss on drying, separation and measurement of moisture, chemical methods, electrometric methods, and spectroscopic methods as per IP.
Why is moisture content determination important?
The analysis of moisture content is essential to the food industry to control for the quality of the food, as well as the shelf life, in addition to helping food manufacture companies adhere to legal and labeling requirements.
What is moisture content formula?
Calculate the moisture content on a wet-weight basis using the following formula: Moisture content (%) = W2 – W3 x 100. W2-W1. where, W1 = weight of container with lid; W2 = weight of container with lid and sample before drying; and W3 = weight of container with lid and sample after drying.
What is the principle of moisture content?
The principle of the thermogravimetric method of moisture content determination is defined as the weight loss of mass that occurs as the material is heated. The sample weight is taken prior to heating and again after reaching a steady-state mass subsequent to drying.
What is the purpose of moisture content test?
Purpose: This test is performed to determine the water (moisture) content of soils. The water content is the ratio, expressed as a percentage, of the mass of “pore” or “free” water in a given mass of soil to the mass of the dry soil solids.
What is the purpose of moisture analysis?
Summary. The analysis of moisture content is essential to the food industry to control for the quality of the food, as well as the shelf life, in addition to helping food manufacture companies adhere to legal and labeling requirements.
What does moisture content tell you?
Moisture content (MC) is a reference to the amount of moisture present in a material. This value is often represented as a percentage of the material’s mass (such as X% MC). The amount of moisture in an object can be measured in several different ways, such as with oven-dry tests or moisture meters.
How do you calculate moisture content by Karl Fischer method?
The water equivalence factor F, in mgs of H2O per ml of reagent, is calculated according to the formula 0.1566 x w/v, where W is the weight in mgs of sodium tartrate and V is the volume in ml of the reagent.
How do you calculate dry basis moisture content?
Dry Basis. Dry basis moisture content (designated Md in the text) is described by the percentage equivalent of the ratio of the weight of water (WW) to the weight of the dry matter (Wd). Note that dry weight moisture content can range from 0 to very large percentages.
What is the two methods of moisture determination?
To be effective, moisture determination methods must be fast, repeatable, and precise. Two fundamental thermogravimetric moisture content measuring technologies are halogen and infra red drying. Other traditional methods include oven drying and microwave drying processes.
What do you mean by proximate analysis of feed?
PROXIMATE ANALYSIS This refers to the determination of the major constituents of feed and it is used to assess if a feed is within its normal compositional parameters or somehow been adulterated. This method partitioned nutrients in feed into 6 components: water, ash, crude protein, ether extract, crude fibre and NFE.
How is the moisture content of food determined?
This system of analysis divides the food into six fractions: moisture, ash, crude protein, ether extract, crude fibre and nitrogen-free extractives. The moisture content is determined as the loss in weight that results from drying a known weight of food to constant weight at 100 degrees C.
Do you include water loss in moisture determination?
Standard moisture determinations do not include the water from the decomposition of organic constituents in coal, the water inherent in clays, or the water losses that occur at a higher temperature than the test temperature (Carpenter, 2002).
How is the moisture content of solid fuel determined?
The proximate analysis consists of measurements to determine the moisture content, the volatiles content, the fixed carbon content, and the ash content. Moisture content: The moisture content of a solid fuel is determined by ASTM method D3173 ( Montgomery, 1978) where the sample is dried in an oven at 104–110°C (219–230°F) for exactly one hour.
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