Hair hydrolyzate

Fatty Held—Peptide Condensates. These proteia detergents are reaction products of fatty acid chlorides and hydrolyzed proteias. They are used ia shampoos because of their mildness on skin, hair, and to eyes when used alone or ia combination with alkyl surfactants (8). 

The differences in the amino acid chemistry of the hide coUagen and the hair keratin are the basis of the lime-sulfide unhairing system. Hair contains the amino acid cystine. This sulfur-containing amino acid cross-links the polypeptide chains of mature hair proteins. In modem production of bovine leathers the quantity of sulfide, as Na2S or NaSH, is normally 2—4% based on the weight of the hides. The lime is essentially an unhmited supply of alkah buffered to pH 12—12.5. The sulfide breaks the polypeptide S—S cross-links by reduction. Unhairing without sulfide may take several days or weeks. The keratin can be easily hydrolyzed once there is a breakdown in the hair fiber stmcture and the hair can be removed mechanically. The coUagen hydrolysis is not affected by the presence of the sulfides (1—4,7). 

Hydrolyzed soy proteins are also sometimes added to hair-spray. These are more commonly known as soy sauce and MSG (monosodium glutamate), an amino acid. 

Urticants that have entered the body are metabolized, hydrolyzed, or bound to tissue and pose little threat of off-gassing. To remove agents on the outside of the body, wash the remains with soap and water ensuring that the solution is introduced into the ears, nostrils, mouth, and any wounds. Pay particular attention to areas where agent may get trapped, such as hair, scalp, pubic areas, fingernails, folds of skin, and wounds. All wash and rinse waste must be contained for proper disposal. 

Hydrolyzable chloride (HyCl) content, of epoxy resins, 10 385-386 Hydrolyzates, in stream water, 26 24 Hydrolyzed collagen, hair cleaner ingredient, 7 850t... 

Potassium cocoyl hydrolyzed collagen, hair cleaner ingredient, 7 850t Potassium compounds, 20 608-644 analytical methods for, 20 639 aqueous solubility of, 20 613t economic aspects of, 20 637-639 health and safety factors related to,... 

The major textiles before the 1920s were wool (animal hair), cotton (a seed pod), and silk (a protein used for making cocoons). The silk spider also had a clever device in its abdomen for expelling a gel in a sac through a spinneret where reactions with air made a solid fiber with a uniform cross section. DuPont took this idea in spinning hydrolyzed cellulose into rayon fibers and scaling-the process up far beyond the needs of spiders. 

Malathion is an organophosphate cholinesterase inhibitor that is hydrolyzed and inactivated by plasma carboxylesterases much faster in humans than in insects, thereby providing a therapeutic advantage in treating pediculosis (see Chapter 7). Malathion is available as a 0.5% lotion (Ovide) that should be applied to the hair when dry 4-6 hours later, the hair is combed to remove nits and lice. 

Human hair (Note i) is freed from foreign matter (Note 2), washed well with a lukewarm solution of soap (Note 3), then twice with cold distilled water, and dried. This washing removes the natural oils from the hair (Note 4). Two kilos of the dry, washed hair is pushed into a 12-I. round-bottom Pyrex flask, and 4 1. of 20 per cent hydrochloric acid (Note 5) is added. An air-cooled reflux condenser, consisting of a wide glass tube, is attached to the flask. The hair is hydrolyzed by heating on the steam bath (Note 6) until the biuret reaction is entirely negative this requires one hundred twenty to one hundred forty-four hours. 

Tretyakov and Filimonov (219) describe a coordinative interaction between benzonitrile and aprotic sites on magnesium oxide, and Zecchina et al. (256) came to the same conclusion for the adsorption of propionitrile, benzonitrile, and acrylonitrile on a chromia-silica catalyst. Chapman and Hair (257) observed an additional chemical transformation of benzonitrile on alumina-containing surfaces, which they describe as an oxidation. Knozinger and Krietenbrink (255) have shown that acetonitrile is hydrolyzed on alumina by basic OH- ions, even at temperatures below 100°C. This reaction may be described as shown in Scheme 2. The surface acetamide (V) is subsequently transformed into a surface acetate at higher temperatures. Additional reactions on alumina are a dissociative adsorption and polymerizations (255) analogous to those observed for hydrogen cyanide by Low and Ramamurthy (258), and a dissociative adsorption. Thus, acetonitrile must certainly be refused as a probe molecule and specific poison. 

In 1980, Klug reported a method to detect morphine in head hair of drug abusers by TLC. He dissolved the hair in sodium hydroxide and hydrolyzed the solution with HCL. He extracted the solution with amyl alcohol and separated the components by TLC. Detection and quantitation were made by fluorimetry. The findings were between traces and 4 ng/mg. A HPTLC method was used to determine morphine in human hair. From 20 to 200 mg of hair were washed four times with water to remove surface contamination. Then the hair was incubated in sodium hydroxide and subsequently in HCL at 80°C in both cases. After SPE (type "Extrelut 3"/Merck) the solution was dansylated, analyzed by HPTLC (methanol (MeOH)/ammonia 99 1), and quantitated by densitometry. 

In studies performed by Arnold " and Sachs and Arnold, hair samples were treated with a solution of 1 M NaOH and boiled until the hair disintegrated. The hydrolyzed sample was neutralized with 1 M HCl. The same approach was employed by Kintz and Mangin. Hair digests were analyzed directly by the enzyme multiplied immunoassay technique (Emit , Syva Corporation, Palo Alto, CA) and fluorescence polarization immunoassay (FPIA, Abbott Laboratories, Abbott Park, IL). 

Nakahara et al. studied the disposition of 6-AM in monkey and human hair. 6-AM and morphine were present in all hair samples, and heroin was not detected. In addition, the concentration of 6-AM was greater than the concentration of morphine. Nakahara et al. also evaluated the total morphine content (heroin and 6-AM were hydrolyzed to morphine) in monkey hair following subcutaneous administration of heroin (2.5 mg) and morphine (10 mg). Although the morphine dose was 4 times greater than the heroin dose, the mean morphine concentration was only about two thirds of that found following heroin administration. The results indicate that heroin and 6-AM are incorporated more readily into hair than morphine. Based upon this information, the theoretical distribution of heroin and its metabolites in hair is illustrated in Figure 6. 

Blood Meal is produced from clean, fresh animal blood exclusive of aU extraneous materials such as hair, stomach belchings, and urine, except as might occur unavoidably in good processing practices. The process used must be listed as a part of the product name such as conventional cooker dried, steam, spray, or hydrolyzed. 

Acylated Polypeptides (From partially hydrolyzed protein from scrap leather and other waste protein.) Used in hair preparations and shampoos, alkaline cleaning preparations, wax strippers. Good detergency and resistance to hard water. 

Tear gas codename, CR. White solid low vapour pressure used as aerosol. Irritant. More potent than CS but less toxic. Low solubility and not easily hydrolyzed by water and thus less easy to remove from the skin and hair and from surroundings than CS. 

Collagen 15K. [Brooks Industries] Hydrolyzed mixed glycosaminoglycans, hydrolyzed collagen, hydrolyzed dermal proteins for skin and hair care cosmetics. 

Collagen Hydrolyzate Cosmetic. [May-brook] Hydrolyzed collagen protective colloid film former, moisturizer, substantivity agent for hair and skin care prods. 

Crodasone. [Croda Inc.] Hydrolyzed wheat protein polysiloxane copolymer film-forming and substandvity agent, lubricant, condidoner for skin and hair care prods. 

---