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Topic: Rennin


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  Rennin Investigation
Rennin is a proteolytic enzyme and is characteristically found in the gastric juices of young mammals.
Rennin is secreted in an inactive form, pro-rennin, which is activated by the hydrochloric acid of the gastric juice.
Rennin catalyses the conversion of the protein of milk, caseinogen, into paracasein, which is precipitated in the stomach as a calcium salt.
www.sci-journal.org /reports/vol1no2/v1n2k41.htm   (4112 words)

  
 Cheese - Printer-friendly - MSN Encarta
Curds are formed when an enzyme called rennin is stirred into milk.
Rennin aids coagulation only if the milk is slightly acidic, as it is when it becomes sour.
Rather than waiting for milk to sour, cheese makers speed up the process by warming the milk and adding specialized bacteria that convert the sugars found in milk to lactic acid, creating the acidic environment necessary for casein coagulation.
encarta.msn.com /text_761560939___2/Cheese.html   (796 words)

  
 Curdling Milk
Milk protein is cleaved by rennin and forms curds.
Rennin, a protease, is added to two of the samples to curdle the milk.
In the second dish, the rennin specifically cleaved a hydrophilic portion of the milk protein.
jchemed.chem.wisc.edu /JCESoft/CCA/CCA5/MAIN/2BIOCHEM/BIOCHEM2/CURDMILK/MOVIE.HTM   (168 words)

  
 Say Cheese   (Site not responding. Last check: 2007-10-26)
Rennin (also called chymosin) was originally produced by soaking the fourth stomach of a calf in brine (salt water).
Rennin is an acid protease, meaning it breaks down protein bonds in an acidic environment.
The rennin used in commercial cheese processing is diluted to about 1 part in 4500.
www.chemistry.org /portal/a/c/s/1/feature_ent.html?id=c373e9f98d8a67518f6a4fd8fe800100   (1370 words)

  
 Stomach Acid - Chempedia
When food is masticated, a hormone, gastrin, is released from G cells triggering the secretion of a gastric acid containing the necessary enzymes (pepsin and rennin) for breaking down food in the stomach.
Rennin, similarly to pepsin, is synthesized in an inactive form in chief cells, becomes active through exposure to HCl, and operates best under very acidic conditions.
Rennin aids in the digestion of milk products, by clotting and curdling the milk, preventing it from flowing right through the stomach and skipping initial digestion of proteins.
dopamine.chem.umn.edu /chempedia/index.php/Stomach_Acid   (782 words)

  
 rennin - Search Results - MSN Encarta
action of rennin, cheese manufacturing, commercial uses of rennin, function of rennin in body
The tissues of the stomach include an outer fibrous coat derived from the peritoneum and, beneath this, a coat of smooth muscle fibers (Muscle)...
Casein is used as a food supplement and as an adhesive, a constituent of water paints, and a finishing material for paper and textiles.
ca.encarta.msn.com /rennin.html   (102 words)

  
 Mayville State University
An enzyme called rennin is produced in the stomachs of infant mammals and coagulates casein, a milk protein.
Rennin is also used commercially to prepare cottage cheese.
After rennin finished coagulating the curds and separating the whey, the two components were separated and chemical tests were run on each.
www.mayvillestate.edu /about_msu/news.cfm?story=223   (806 words)

  
 Learning, Food Resource [http://food.oregonstate.edu/], Oregon State University, Corvallis, OR
Rennin is an enzyme which coagulates milk proteins to form a gel.
Rennin is responsible for releasing glycomacropeptides from the kappa casein of milk.
Rennin cleaves the peptide bond between phenylalanine and methionine in kappa casein.
food.oregonstate.edu /learn/milk.html   (3249 words)

  
 Palace Café
rennin also called CHYMOSIN, protein-digesting enzyme that curdles milk by transforming caseinogen into insoluble casein; it is found only in the fourth stomach of cud-chewing animals, such as cows.
In animals that lack rennin, milk is coagulated by the action of pepson, as is the case in humans.
Rennin a coagulating enzyme obtained from a young animal’s (usually a calf’s) stomach, rennin is used to curdle milk in foods such as cheese and junket.
www.palacecafe.com /recipes/recipe.php?r=216   (474 words)

  
 Was Darwin Right
In the blood rennin interacts with a protein called angiotensinogen, which is made by the liver.
Rennin cuts off a string of a string of ten amino acids called angiotensin I from the angiotensinogen.
Neither the rennin, angiotensinogen or the ACE are of any use on their own but the system will not work if one of them is missing.
www.wasdarwinright.com /complexity-f.htm   (1458 words)

  
 rennin - General Practice Notebook   (Site not responding. Last check: 2007-10-26)
Rennin is an enzyme produced in an inactive form by the gastric glands of the stomach.
Within the acidic environment of the stomach, rennin is converted to its active form which makes casein - a key milk protein - insoluble.
The clotted protein is less likely to undergo rapid transit, permitting attack by proteolytic enzymes for a longer duration.
www.gpnotebook.co.uk /cache/403046460.htm   (138 words)

  
 HSC Online
Rennin is an enzyme found in the stomachs of young mammals that are still being fed on milk.
The rennin 'curdles' or sets the protein in the milk separating it into curds (solids) and whey (liquid).
Add the same amount of rennin solution to a number of test tubes of milk.
hsc.csu.edu.au /biology/core/balance/9_2_1/921net.html   (2116 words)

  
 rennin comics   (Site not responding. Last check: 2007-10-26)
The most obvious connection is the visual evolution of Tom Rennin, inspired in part by the character of Jeremy Hilary Boob.
It originally appeared in the printed RENNIN comic as part of the introduction to Tom Rennin's town of Goose Creek and shows the main street of the commmunity.
The fictitious town of Goose Creek where the series Rennin is set is geographically based on Broad Channel, New York, the town where I was born and lived for the first 23 years of my life.
www.pkblogs.com /rennin   (1475 words)

  
 maintainSCIENTISTS
The enzyme rennin, which is a proteolytic enzyme found in the gastric juice of young mammals, being one of only two enzymes produced in the stomach, will be used for this investigation.
Rennin is produced in the stomach and is activated by gastric juices.
To study the effects of pH on rennin a number of buffer solutions will be used to ascertain at which pH rennin is most effective.
www.geocities.com /crazybiopeeps/maintainSCIENTISTS.html   (2195 words)

  
 Whole Foods Market : Products : Cheese & Specialty : Rennet
Rennin is defined as "a coagulating enzyme occurring in the gastric juice of the calf, forming the active principal of rennet and able to curdle milk." The cheese industry uses a broader definition of the term rennin, referring to it as "any enzyme used for the controlled coagulation of milk."
Animal rennin is the coagulating enzyme (rennin or chymosin) that is harvested from the stomachs of calves.
Today the use of animal rennin is controversial to a variety of cheese consumers.
www.wholefoodsmarket.com /products/specialty/rennet.html   (1116 words)

  
 Calzyme - Manufacturers of Enzymes , Proteins , Coenzymes , Substrates and Related Biochemicals
Rennin is a proteolytic enzyme found principally in the tissue of the fourth stomach of young calves, but also in some other ruminant mammals.
Crystalline Rennin is a heterogeneous protein and can be separated chromatographically into two components Rennin A and Rennin B. These two components can also be obtained by activation of the two separate zymogens, prorennin A and prorennin B (Foltmann, B.,C.R. Lab.
The amount of Rennin which will coagulate 10 ml of milk per minute at 30°C. Substrate: 100 ml of cow's milk (or a solution of dried milk powder of equivalent consistency) and add 1 ml CaCl2 (1.0 M).
www.calzyme.com /commerce/catalog/spcategory.jsp?category_id=1094   (397 words)

  
 Grams of Fiber in Rennin - High Fiber Diet
Rennin, chocolate, dry mix, prepared with 2% milk
Rennin, vanilla, dry mix, prepared with 2% milk
Rennin, vanilla, dry mix, prepared with whole milk
www.highfiberdiet.net /sweets/2765   (89 words)

  
 Cheese - MSN Encarta
How to raise your score without raising your blood pressure.
Rennin encourages casein, one of the proteins in milk, to solidify and clump together, or coagulate.
Rennin is found in rennet, a substance extracted from the stomach linings of calves, sheep, and goats, and also in certain plant extracts.
encarta.msn.com /encnet/refpages/RefArticle.aspx?refid=761560939   (1833 words)

  
 PALS - Administration Procedures
Students are told that an enzyme that is added to the milk, rennin, is involved in the natural curdling process of milk.
For example, if 4 groups of students will be performing this lab exercise, add 4 rennin tablets, 1 or 2 at a time, to 20 ml of distilled water and mix well.
It is suggested that the rennin solution be made up just prior to use.
pals.sri.com /tasks/5-8/Temperature/admin.html   (689 words)

  
 Paper Title   (Site not responding. Last check: 2007-10-26)
Since the rennin clotting behavior is a major factor in cheesemaking, information dealing with rennin clotting properties of caprine milk, compared to that of bovine milk, would allow the improvement of cheesemaking processes for this type of milk.
During the primary phase the enzyme rennin splits the Phe-Met-bond of -casein causes the secondary phase of casein clotting, i.e., the aggregation of the micelles.
The tertiary phase of coagulation is associated with an increase in the rigidity of the curd.
www.fass.org /baltimore2k/interpretivesums/mora.htm   (407 words)

  
 § 39. renin / rennet / rennin. 4. Science Terms. The American Heritage Book of English Usage. 1996
This compound, it was shown, helped break apart a protein called casein in the milk and, in the process, triggered the formation of another compound that then bonded to the calcium in the milk, forming curds.
The enzyme was dubbed rennin, a combination of rennet and the suffix -in, “neutral chemical compound.” This suffix appears in the names of other enzymes such as trypsin, the compound produced in the pancreas that breaks proteins into smaller bits for use by the body.
While the stomach is the site of rennin production, the kidneys are the source for renin.
www.bartleby.com /64/C004/039.html   (397 words)

  
 IFT Experiments in Food Science Series
The mechanism for the coagulation of the casein by the rennin is different from the acid precipitation of casein.
In the first stage, rennin (a proteolytic enzyme) splits a specific bond in the amino acid chain of the kappa-casein macromolecule converting it into a para-kappa-casein and a glyco-macropeptide.
The rennin coagulum consists of casein, whey protein, fat, lactose, and the minerals of the milk, and has a fluffier and spongier texture than the acid precipitate.
www.accessexcellence.org /AE/AEPC/IFT/unit_three.html   (4546 words)

  
 Whole Foods Market : Products : Cheese & Specialty : Rennet
Rennin is defined as "a coagulating enzyme occurring in the gastric juice of the calf, forming the active principal of rennet and able to curdle milk." The cheese industry uses a broader definition of the term rennin, referring to it as "any enzyme used for the controlled coagulation of milk."
Animal rennin is the coagulating enzyme (rennin or chymosin) that is harvested from the stomachs of calves.
Today the use of animal rennin is controversial to a variety of cheese consumers.
www.wholefoods.com /products/specialty/rennet.html   (1116 words)

  
 Nutrition Facts and Analysis for Desserts, rennin, tablets, unsweetened
Caloric Ratio Pyramid for Desserts, rennin, tablets, unsweetened
Estimated Glycemic Load for Desserts, rennin, tablets, unsweetened
Nutrients per Serving for Desserts, rennin, tablets, unsweetened
www.nutritiondata.com /facts-C00001-01c21Qz.html   (793 words)

  
 Runaway
Rennin sneaked up behind her and said in her ear, "This is Queen Rhiannon's Warrior."
Rennin ducked out of the way, picked her up and swirled her around.
Rennin had told him that there was no way he could get into the temple while Rhiannon was still inside, looking for her mother.
members.home.nl /daisy-punky/html/part_4.HTM   (3646 words)

  
 Rennin, vanilla, dry mix, prepared with whole milk, Calorie count, Protein, Fats, and Nutrients
Rennin, vanilla, dry mix, prepared with whole milk, Calorie count, Protein, Fats, and Nutrients
Nutition Label for Rennin, vanilla, dry mix, prepared with whole milk, 100 grams.
Nutition Label for Rennin, vanilla, dry mix, prepared with whole milk
www.thecarolinaweigh.com /nutrition/detail/RENNIN-VANILLA-DRY-MIX-PREP-W/-WHL-MILK.html   (95 words)

  
 Nutrition Facts and Analysis for Rennin, chocolate, dry mix, prepared with 2% milk   (Site not responding. Last check: 2007-10-26)
Rennin, chocolate, dry mix, prepared with 2% milk
Foods closer to the upper right corner are Better Choices for healthy weight loss, while foods closer to the lower right corner are Better Choices for healthy weight gain.
The Estimated Glycemic Load was approximated by comparing this food's nutrient profile to that of similar foods for which Glycemic values have been measured.
www.nutritiondata.com /facts-A00001-01c01Qq.html   (872 words)

  
 Lactobacillus rennini sp. nov., isolated from rennin and associated with cheese spoilage -- Chenoll et al. 56 (2): 449 ...
nov., isolated from rennin and associated with cheese spoilage -- Chenoll et al.
nov., isolated from rennin and associated with cheese spoilage
rennin and regarded as causing cheese spoilage, were deposited
ijs.sgmjournals.org /cgi/content/abstract/56/2/449   (246 words)

  
 Rennin and Pepsin
Chymosin, known also as rennin, is a proteolytic enzyme synthesized by chief cells in the stomach.
Its role in digestion is to curdle or coagulate milk in the stomach, a process of considerable importance in the very young animal.
If milk were not coagulated, it would rapidly flow through the stomach and miss the opportunity for initial digestion of its proteins.
www.biology-online.org /biology-forum/about616.html   (294 words)

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