Ingredient

Rice protein is a vegan protein isolate made from rice. It is often used as an alternative to the more common whey and soy protein isolates. To make it, brown rice is treated with enzymes that cause carbohydrates to separate from proteins. The resulting protein powder may then be flavored, and consumed with water, milk, or added to smoothies or health shakes.
Rice protein powder has a more distinctive taste than most other forms of protein powder. Like whey hydrolysate, this flavor is not effectively masked by most flavorings; however, the taste of rice protein is usually considered to be less unpleasant than the bitter taste of whey hydrolysate. This unique rice protein flavor may even be preferred to artificial flavorings by consumers of rice protein.

Rice protein accounts for 8% left and right of rice gross weight, have high nutrition, hypoallergenic, local flavor gentle, can not cause the peculiar property such as ventosity.Its application is more and more extensive, as be used as, produces rice protein powder, hydrolysed rice albumen, rice modified protein, high added value peptide, biologically active peptide, resistance protein; Can be used as the cub feed addictive, improve the absorption of cub to nutrition, improve premunition.
Method of rice protein hydrolysate as a kind of high-quality without antigen vegetable protein source, the countries such as Europe be widely used in newborn baby pig feedstuff, high-grade aquatic products material, calf for milk powder and feed for pet in.Be characterized in having very high glutamine content (up to 30%), documents and materials show: stress or limit and raise (during weaned piglet) under condition, glutamate is main restrictive factor, the weanling pig artificial synthetic glutamate of feeding, can improve small intestine alimentary canal shape (intestinal villi structure), improve immune response.
Method of rice protein hydrolysate is to take natural vegetable protein through modification, to form as raw material, it is the green safety plant protein products, can overcome the bio-safety problem of plasma protein homology, can avoid again soybean protein to meet with genetically modified trade barrier, not have the restriction in application.Latest research shows, with hydrolysis, wait the biochemical treatment Gluten to make the protein hydrolysate feed piglet is had to very high digestibility, without ANFs, can promote the growth of intestine of young pigs fine hair, obtain higher feed efficiency, the spray-drying plasma protein (2.5%～8%) of alternative costliness.At present, the research of domestic relevant hydrolysis defatted soybean, cotton dregs is more, less about the research report of enzyme modification rice protein.(the Faoming properties of enzymatially hydrolysed wheat gletun such as Drago, Cereal Sci, 2000,32:114-135) adopt the heat treated Gluten of fungal proteinase hydrolyze to find, Gluten solubility increases and increases along with degree of hydrolysis (DH), but foaming characteristic when exceeding certain DH scope by destroyed.Qi Junru etc. adopt the neutral proteinase hydrolysis rice protein, and have studied the controlled hydrolysis rice protein, and show: controlled hydrolysis has improved the functional characteristic of rice protein greatly.improve the functional of rice protein with alkali protease (Alcalase), studied the impact on the rice protein emulsibility of rice protein concentration, enzyme concentration, pH value, heat time heating time and temperature, and, on this basis by orthogonal experiment, explore the optimum condition that alkali protease improves rice protein function.Recording the front rice protein solubility of modification is 7.67%, and under the optimum condition of modification, its solubility is 20.76%, and as can be seen here, the solubility of rice protein is greatly improved after the Alcalase hydrolysis; When the rice protein modification obtains the optimum emulsification effect, 92-94) to adopting the enzymatic hydrolysis rice protein to produce biological activity protein, carried out pilot study, think that enzymatic hydrolysis is the effective way that improves the rice protein food function, can be by protein-modified to desired functional characteristic.
From above-mentioned report, the correlative study of enzymatic hydrolysis rice protein at present all rests on laboratory stage, does not carry out further scale-up research, also could not realize suitability for industrialized production, and enzyme preparation adopts single composition more.Carrying out the feeding method of rice protein hydrolysate product of industrial-scale production by enzyme modification have not been reported.It is the ideal substitute of animal protein that rice protein generates the rice functional protein through enzyme modification, aspect animal-breeding, has broad application prospects and huge market potential.

Synthesis
Synthetic taurine is obtained by the ammonolysis of isethionic acid (2-hydroxyethanesulfonic acid), which in turn is obtained from the reaction of ethylene oxide with aqueous sodium bisulfite. A direct approach involves the reaction of aziridine with sulfurous acid.
In the laboratory, taurine can be produced by alkylation of ammonia with bromoethanesulfonate salts.

Biosynthesis
Taurine is naturally derived from cysteine. Mammalian taurine synthesis occurs in the liver via the cysteine sulfinic acid pathway. In this pathway, cysteine is first oxidized to its sulfinic acid, catalyzed by the enzyme cysteine dioxygenase. Cysteine sulfinic acid, in turn, is decarboxylated by sulfinoalanine decarboxylase to form hypotaurine. Hypotaurine is enzymatically oxidized to yield taurine by hypotaurine dehydrogenase.
Taurine is also produced by the transsulfuration pathway, which converts homocysteine into cystathionine. The cystathionine is then converted to hypotaurine by the sequential action of three enzymes: cystathionine gamma-lyase, cysteine dioxygenase, and cysteine sulfinic acid decarboxylase. Hypotaurine is then oxidized to taurine.
A pathway for taurine biosynthesis from serine and sulfate is reported in microalgae, developing chicken embryos, and chick liver. Serine dehydratase converts serine to 2-aminoacrylate, which is converted to cysteic acid by 3'-phosphoadenylyl sulfate:2-aminoacrylate C-sulfotransferase. Cysteic acid is converted to taurine by cysteine sulfinic acid decarboxylase.

Cats
Cats lack the enzymatic machinery (sulfinoalanine decarboxylase) to produce taurine and must therefore acquire it from their diet. A taurine deficiency in cats can lead to retinal degeneration and eventually blindness - a condition known as central retinal degeneration as well as hair loss and tooth decay. Other effects of a diet lacking in this essential amino acid are dilated cardiomyopathy and reproductive failure in female cats.

Birds
Taurine appears to be essential for the development of passerine birds. Many passerines seek out taurine-rich spiders to feed their young, particularly just after hatching. Researchers compared the behaviours and development of birds fed a taurine-supplemented diet to a control diet and found the juveniles fed taurine-rich diets as neonates were much larger risk takers and more adept at spatial learning tasks. Under natural conditions, each blue tit nestling receive 1 mg of taurine per day from parents.
Taurine can be synthesized by chickens. Supplementation has no effect on chickens raised under adequate lab conditions, but seems to help with growth under stresses such as heat and dense housing.

Fish
Species of fish, mostly carnivorous ones, show reduced growth and survival when the fish-based feed in their food is replaced with soy meal or feather meal. Taurine has been identified as the factor responsible for this phenomenon; supplementation of taurine to plant-based fish feed reverses these effects. Future aquaculture is expected to use more of these more environmentally-friendly protein sources, so supplementation would become more important.
The need of taurine in fish is conditional, differing by species and growth stage. The Olive flounder, for example, has lower capacity to synthesize taurine compared to the rainbow trout. Juvenile fish are less efficient at taurine biosyntheis due to reduced cysteine sulfinate decarboxylase levels.

Other mammals
A number of other mammals also have a requirement for taurine. While the majority of dogs can synthesize taurine, case reports have described a singular American cocker spaniel, 19 Newfoundland dogs, and a family of golden retrievers suffering from taurine deficiency treatable with supplementation. Foxes on fur farms also appear to require dietary taurine. The rhesus, cebus and cynomolgus monkeys each require taurine at least in infancy. The giant anteater also requires taurine.