Moisture loss, preventing

Weight losses during the heating process are caused through exudative and/or evaporative moisture losses. Prevention of the cooking loss is a major concern in heat processing of meat. In meat dehydration, however, the weight lost by evaporation must be effectively achieved, but solid losses should be avoided (Sebranek, 1988). 

Pre-Production Handling. Salt-cured catde hides, when received at the tannery, are individually bundled to prevent excessive moisture loss. The bundles are tied with ropes that are later cut and removed the hides may be sorted for different weight or quaUty classification at this point. It is best to have hides of similar size and thickness in a given production batch to assure an even reactivity of the processing chemicals and to avoid frequent adjustments in the machinery to compensate for size and thickness variations. In the modem large tannery, the size/quaUty classification is not necessary because the hides arrive in carload quantities under specifications as to size, type, and month of slaughter. 

The hygroscopic and humectant properties of com symps are of great importance in many apphcations. Depending on the type of symp and on the specific conditions of temperature and humidity, the products may either resist or facihtate moisture loss or moisture absorption. The abihty to attract moisture or retard its loss increases with increasing DE value. Prevention of moisture pickup is more characteristic of symps having low DE values. 

Any material used for packaging natural cheeses must prevent moisture loss, maintain good product appearance, protect against microorganisms, and act as an oxygen barrier. Aluminum foil laminates provide this type of protection for cheese. Cream cheese is packed in lami-... 

Migration of nitrosamines into consumer products can occur via direct contact of materials such as waxed containers, elastic and rubber etc.81. Morpholine is used extensively as an industrial solvent for wax formulations. The wax formulations are used for coating fruits and vegetables to prevent moisture loss and increase shelf-life of the products. Paper and cardboard packed with morpholine was also found to give rise to NDMA, as these packaging materials were found to be contaminated with NDMA as well. Besides this, rubber products also provided a migratory source for both nitrosamines and nitros-able amine precursors, as trace levels of NDEA and TV-nitrosodibutylamine (NDBA) have been reported in cured meats with amine-based accelerators in the rubber nettings82. 

Place sample (5 to 10 ml) in a disposable sample cup, completely covering the bottom of the cup, if possible. Place sample into sample cup in a timely manner to minimize moisture loss or gain during handling. If sample is not to be tested immediately, place a sample cup lid on the cup to prevent moisture transfer with the room atmosphere. 

There have also been several references to the use of carrageenan in chewable tablets having a confectionary texture.This approach to creating a novel dosage form requires the use of both i-carrageenan and K-carrageenan, to prevent moisture loss and texture changes that occur over time. 

Peel-off masks are applied in a uniform layer on the skin and upon drying and removal produce a sensation of skin tightness and cleansing action. Peel-off masks are marketed to consumers with normal, oily, combination, and acne-prone skin types. These masks are believed to perform the functions of skin exfoliation, hydration, and purification. They are based on plasticized polyvinyl alcohol. Hydrophilic emollients (e.g., ethoxylated fatty acid or alcohol derivatives, dimethicone copolyol) and humectants (e.g., glycerin, propylene glycol, sorbitol) are added to prevent moisture loss and cracking of polyvinyl alcohol film. Solvents... 

Choice of the method of separating such superabsorbents is critical for control of their storage stability. Separation is usually achieved by precipitation with a solvent. For example, it was reported that ethanol was superior in this respect, having the additional benefit of increasing the water absorbance of the precipitate.3013 Ethanol, acetone, and 2-propanol did not perform as well as methanol. It was also reported that the precipitate should be neutralized before precipitation and should be dried under conditions preventing moisture loss.3013 The superabsorbency could be increased by the use of crosslinked acrylic acid for grafting to starch.3014 Random, intermolecular hydrogen-bonds were responsible for this effect. 

Biodegradability has been explored in agriculture to prevent excessive moisture loss and weeds growth, and to alleviate the recyclability problems — an agricultural film should last as long as it is needed, then disintegrate under the influence of either microorganisms and/or UV irradiation. 

The work life of sand coated with aqueous sodium silicate is dependent on the relative humidity of the environment At 20 RH and 60 RH, the work life is found to be 30 minutes and 90 minutes respectfully. Fig. 1. Coated sand that is sealed to prevent water loss or CO absorption, has a work life in excess of three weeks Even a simple cover retards moisture loss and extends the work life for example, at 20 RH a cover increases the work life from 30 minutes to over 3 hours ... 

Emollients are chemicals that coat the skin, preventing moisture from passing through. Oils are very effective emollients, but most people are put off by their sUppery feel. The challenge for cosmetics manufacturers is to find substances that prevent moisture loss but do not make the wearer feel like a greaseball. Cholesterol meets this challenge. It is readily absorbed into the surface of the skin, and it doesn t feel oily. 

What we do know is that the oil penetrates skin smoothly, and it s a good emoUient — that is, it prevents moisture loss and makes the shin more supple. But there are many other oils that do this too, and they cost a lot less. 

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