Acid detergent residue

Cellulose + lignin (acid detergent residue) (%, dry basisd) 3.3-4.3 3.3... 

Acid Detergent Fiber. The ground sample is heated for 1 h under reflux in a solution of 2% cetyltrimethyl ammonium bromide [57-09-0] in IN sulfuric acid [7664-93-9]. The acid hydrolyzes and dissolves the nonceUulosic polysaccharides. The insoluble residue, relatively free of hemiceUuloses and containing aU the ceUulose and lignin, is filtered, dried, and corrected for ash to give the ADF value. 

Unavailable N Acid detergent Kjeldahl nitrogen on ADF residue Maillard products plus lignified N... 

An analysis of dairy products includes the prox-imates total solids, protein, fat, energy, ash, acidity, and specific gravity, and the specifics lactose, sodium, potassium, calcium, copper, chloride, phosphate, citrate, lactose, preservatives and antibiotics, added dyes, detergent residues, organic residues, and... 

The acid-detergent fibre (ADF) is the residue after refluxing with 0.5 M sulphuric acid and cetyltrimethyl-ammonium bromide, and represents the crude lignin and cellulose fractions of plant material but also includes silica. 

The acid-deter gent lignin determination involves the preparation of acid-detergent fibre as the preparatory step. The ADF is treated with 72 per cent sulphuric acid, which dissolves cellulose. Ashing the residue determines crude lignin, including cutin. 

Acid detergent fibre (ADF), dissolves hemicellulose leaving a residue of cellulose and lignin. The difference between tests 1 and 2 is therefore a measure of the hemicelluose content... 

Acid detergent lignin (ADL) tests determine tiie lignin and cellulose content of the residue from test 2. Cellulose is dissolved from the sample leaving a lignin residue. The difference between tests 2 and 3 represents the cellulose content. Subtraction of the cellulose content from the initial mass of residue in test 3 represents lignin... 

The solubihty characteristics of sodium acyl isethionates allow them to be used in synthetic detergent (syndet) bars. Complex blends of an isethionate and various soaps, free fatty acids, and small amounts of other surfactants reportedly are essentially nonirritant skin cleansers (66). As a rule, the more detersive surfactants, for example alkyl sulfates, a-olefin sulfonates, and alkylaryl sulfonates, are used in limited amounts in skin cleansers. Most skin cleansers are compounded to leave an emollient residue on the skin after rinsing with water. Free fatty acids, alkyl betaines, and some compatible cationic or quaternary compounds have been found to be especially useful. A mildly acidic environment on the skin helps control the growth of resident microbial species. Detergent-based skin cleansers can be formulated with abrasives to remove scaly or hard-to-remove materials from the skin. 

Avigad and Milner224 used a turbidimetric method based on the measurement of residual turbidity caused by complexing the acid polysaccharide with such quaternary ammonium detergents as cetyl-pyridinium bromide. The activity unit was expressed as the amount of enzyme bringing about a decrease of absorbance at 400 nm of 0.01/min. 

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