| 单词 | pepsin |
| 例句 | The soft drink had been named for the digestive enzyme pepsin, he sagely told us, and so was suited to the task. Middlesex: A Novel 2002-06-05T00:00:00Z Gastric glands also produce a chemical called pepsin that breaks down the protein in your diet. Ever wondered how your stomach works? 2016-09-09T04:00:00Z The stomach lining is unaffected by pepsin and the acidity because pepsin is released in an inactive form and the stomach has a thick mucus lining that protects the underlying tissue. Concepts of Biology 2013-04-25T00:00:00Z For example, trypsin, an enzyme in the human small intestine, works most efficiently at pH 8, whereas pepsin in the stomach works best under acidic conditions. Biology for AP Courses 2022-06-09T00:00:00Z Chief cells—Located primarily in the basal regions of gastric glands are chief cells, which secrete pepsinogen, the inactive proenzyme form of pepsin. Anatomy and Physiology 2013-06-19T00:00:00Z That’s because plant protein is digested mostly in the intestines, while animal protein is digested in the stomach—which is also the point of production for pepsin. Acid Reflux May Respond Better To Diet Than Drugs 2017-09-07T04:00:00Z The desperate motions provoke more action potentials, stimulating the plant to flood its trap with hydrochloric acid, pepsin- and trypsin-class enzymes, and chitinase to pierce through the insect’s exoskeleton and liquefy its meat. Plants That Are Predators 2015-09-14T04:00:00Z The enzyme pepsin digests protein in the stomach. Concepts of Biology 2013-04-25T00:00:00Z In the stomach, pepsinogen mixes with hydrochloric acid to form pepsin, which begins digesting proteins, such as turkey, into smaller chains of amino acids. Biology for AP Courses 2022-06-09T00:00:00Z The breakdown of protein begins in the stomach through the actions of HCl and the enzyme pepsin. Anatomy and Physiology 2013-06-19T00:00:00Z The gastric enzyme pepsin is only even responsible for about 10 percent of protein digestion, anyway. Debunking the Myth of Food Combining 2015-05-12T04:00:00Z A compound or class of compounds formed from albumin by dilute acids or by an acid solution of pepsin. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z Protein digestion is carried out by an enzyme called pepsin in the stomach chamber. Concepts of Biology 2013-04-25T00:00:00Z Protein digestion is mediated by an enzyme called pepsin in the stomach chamber. Biology for AP Courses 2022-06-09T00:00:00Z Pancreatic juice buffers the acidic gastric juice in chyme, inactivates pepsin from the stomach, and enables the optimal functioning of digestive enzymes in the small intestine. Anatomy and Physiology 2013-06-19T00:00:00Z And while it's true that pepsin requires an acidic environment to be activated from its precursor form, starches do not neutralize the stomach's acidic pH more or less than any other food. Debunking the Myth of Food Combining 2015-05-12T04:00:00Z If such is found to be the case, the amount of nourishment should be diminished, and it will be well also to prescribe pepsin either in powder or in solution. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The highly acidic environment kills many microorganisms in the food and, combined with the action of the enzyme pepsin, results in the catabolism of protein in the food. Concepts of Biology 2013-04-25T00:00:00Z Pepsin breaks peptide bonds and cleaves proteins into smaller polypeptides; it also helps activate more pepsinogen, starting a positive feedback mechanism that generates more pepsin. Biology for AP Courses 2022-06-09T00:00:00Z Digestion of proteins begins in the stomach, where HCl and pepsin begin the process of breaking down proteins into their constituent amino acids. Anatomy and Physiology 2013-06-19T00:00:00Z Even people without stomachs – and therefore who lack the benefit of stomach's protein-digesting enzyme pepsin altogether – are able to digest and absorb protein just fine in their small bowels. Debunking the Myth of Food Combining 2015-05-12T04:00:00Z Such is the agency of ptyalin in the saliva, of pepsin in the gastric juice, and of pancreatin or trypsin in the secretion of the pancreas, in the processes of digestion. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z They have shown that the addition of increased quantities of rennet extract materially hastens the rate of ripening, and that this is due to the pepsin which is present in all commercial rennet extracts. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 9 "Dagupan" to "David" 2012-02-11T03:03:39.807Z Hydrochloric acid helps to convert the inactive pepsinogen to pepsin. Biology for AP Courses 2022-06-09T00:00:00Z The gastric fluid consists mainly of mucous, HCl, and the enzyme pepsin released as pepsinogen. Anatomy and Physiology 2013-06-19T00:00:00Z At this point in the digestive process, pepsin's protein-digesting job is over, and a whole slew of additional enzymes are ready to take over. Debunking the Myth of Food Combining 2015-05-12T04:00:00Z While, therefore, iron is indicated, we must not neglect to pay particular attention to nutrition and digestion, and to aid the latter with pepsin and moderate amounts of muriatic acid, well diluted. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z Trypsin, trip′sin, n. a ferment which occurs in the secretion of the pancreas, and may be isolated from the pancreatic juice, as pepsin from the gastric.—adj. Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) 2012-01-30T03:00:19.113Z The highly acidic environment also kills many microorganisms in the food and, combined with the action of the enzyme pepsin, results in the hydrolysis of protein in the food. Biology for AP Courses 2022-06-09T00:00:00Z His sister always left him with the excuse that she wanted to lie down, and he was alone with his abused stomach and his pepsin tablets and his thoughts. The Girl Scouts Rally Rosanna Wins 2011-11-29T03:00:16.213Z The cause of it, he said, was failure of the stomach to secrete enough pepsin, and the remedy was to take artificial pepsin, obtained from the stomach of a pig. The Book of Life 2011-11-25T03:00:13.343Z Of the solvent effect of pepsin I have not been able to convince myself so as to recommend it. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z They may be made less irritating by giving them with essence of pepsin. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z An enzyme called pepsin digests protein in the stomach. Biology for AP Courses 2022-06-09T00:00:00Z Of medicinal agents, bismuth, arsenic, nux vomica, and the mineral acids are all of acknowledged efficacy, as are also preparations of pepsin. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z Burton took the hint, and in a few moments was threading his way through the meshes of a quadrille amid the pepsin aroma of the sweet Alice. The Bail Jumper 2011-04-16T02:00:19.103Z He isolated pepsin, and demonstrated that it resembled very closely in its action the substances known as ferments. Makers of Modern Medicine 2011-03-05T03:00:29.580Z Maggots filled the mushroom, and exuded a solvent pepsin that liquefied the white firm "meat." The Mad Planet 2011-03-02T03:00:25.117Z When digesting protein and some fats, the stomach lining must be protected from getting digested by pepsin. Biology for AP Courses 2022-06-09T00:00:00Z The action of pepsin, of the pancreatic ferment, of zymase, and of other similar ferments has a great analogy with the purely physical phenomenon of catalysis. The Mechanism of Life The use of the term "peptid" was suggested by the fact that these amino-acids are produced from the hydrolysis of proteins by the digestive enzyme pepsin. The Chemistry of Plant Life Rennet extract contains an enzyme, rennin, that causes the milk to curdle; also another enzyme, pepsin, that exerts a digestive action on the curdled casein. Outlines of dairy bacteriology A concise manual for the use of students in dairying The prevailing ailment of the American people is dyspepsia, which is due to a natural lack of pepsin. The Scrap Book, Volume 1, No. 3 May 1906 First, as previously mentioned, the enzyme pepsin is synthesized in the inactive form. Biology for AP Courses 2022-06-09T00:00:00Z All the candies, stick, drop and fancy; tutti-frutti and pepsin chewing-gum, chocolate creams and marshmallow goods. The Wooing of Calvin Parks This phenomenon has been studied in connection with the zymogens of the digestive proteases, pepsin and trypsin. The Chemistry of Plant Life Outside of the stomach, the same conditions must obtain with reference to the presence of acid, if pepsin is to exert a digestive effect. Outlines of dairy bacteriology A concise manual for the use of students in dairying Literature was to have its once terrible ferments reduced to the quality of a helpful pepsin. The Wife of Sir Isaac Harman This protects the chief cells, because pepsinogen does not have the same enzyme functionality of pepsin. Biology for AP Courses 2022-06-09T00:00:00Z I began taking syrup of pepsin to artificially digest my food and thus take some of the burden off my stomach. Confessions of a Neurasthenic If the disorder continues after the removal of the irritant, a large tablespoonful of rennet, or 30 grains of pepsin, may be given at each meal along with a teaspoonful of tincture of gentian. Special Report on Diseases of Cattle In the stomach the food is acted on and dissolved by the gastric juice or pepsin, which is poured out by an almost infinity of minute tubes, or follicles as they are termed. The Mother's Manual of Children's Diseases The pancreas is a gland which furnishes a strongly alkaline liquid neutralizing the acid of the gastric juice, so that the gastric agent, pepsin, loses its power. Rural Hygiene The enzyme pepsin plays an important role in the digestion of proteins by breaking down the intact protein to peptides, which are short chains of four to nine amino acids. Biology for AP Courses 2022-06-09T00:00:00Z A friendly druggist took sufficient interest in me to inform me that there was not enough pepsin in the ordinary digestive syrups and elixirs to digest a mosquito’s dinner. Confessions of a Neurasthenic Still further, the development of this acid is necessary for the digestive activity of the pepsin in the rennet extract. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying It was Schwann, too, who, simultaneously with Cagniard la Tour, discovered the active principle of gastric juice to be the substance which he named pepsin. A History of the Nineteenth Century, Year by Year Volume Two (of Three) Gluzinski showed, ten years ago, that alcohol causes an arrest in the secretion of pepsin, and also of its action upon food. Alcohol: A Dangerous and Unnecessary Medicine, How and Why What Medical Writers Say In the stomach, pepsin is produced to break down plant material. Biology for AP Courses 2022-06-09T00:00:00Z Digestives—pepsin, pancreatin, muriatic acid and the various bitter tonics. Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine Another important factor in the breaking down of the casein is the pepsin in the rennet extract. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying I likewise arranged a check experiment in which the pepsin was omitted, other conditions remaining unaltered. Scientific American Supplement, No. 664, September 22,1888 Alcohol diminishes the secretions of the gastric juice, unless given in very minute quantities, and kills and precipitates its pepsin. Alcohol: A Dangerous and Unnecessary Medicine, How and Why What Medical Writers Say Proteins are broken down by the enzymes pepsin and peptidase, and by hydrochloric acid. Biology for AP Courses 2022-06-09T00:00:00Z In dyspepsia and constipation, bitter tonics, alkalies, acids, pepsin, saline and vegetable laxatives, are variously prescribed. Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine The activity of pepsin does not become manifest until there is about 0.3 per cent. acid which is approximately the amount developed in the cheddar process. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying All treatment against these conditions was useless; the colon was kept empty, the diet was changed; pepsin and bismuth, tonics, frictions, Turkish baths, and all hygienic observances and moral treatment were all of no avail. History of Circumcision from the Earliest Times to the Present Moral and Physical Reasons for its Performance In the latter a deposit of pepsin was found at the bottom, the alcohol having precipitated it. Alcohol: A Dangerous and Unnecessary Medicine, How and Why What Medical Writers Say Its essential property is the conversion of proteids into peptones, and the ferment by which this is effected is called pepsin. Text Book of Biology, Part 1: Vertebrata A little pepsin added to the hot water may be of use; also in cases of acidity a few drops of white vinegar mixed with the water will be found beneficial. Papers on Health Nature mixes our gastric juice or pepsin and acids in just the right proportion to digest our food, and keep it at exactly the right temperature. Pushing to the Front A noticeable difference, however, is observed in the rapidity with which the albumin and proteids are dissolved in a pepsin solution. Human Foods and Their Nutritive Value The elements of our food which the stomach can digest depend upon the pepsin of the gastric juice for their transformation. Alcohol: A Dangerous and Unnecessary Medicine, How and Why What Medical Writers Say Milk contains a peculiar soluble proteid, called casein, which is precipitated by a special ferment, the rennet-ferment, and the insoluble proteid, the curd, thus obtained is then acted on by the pepsin. Text Book of Biology, Part 1: Vertebrata The pepsin is added to the mixture only when warm, and is injected at once. The Mother and Her Child The cells of the stomach glands manufacture and pour out a slightly sour, or acid, juice containing a ferment called pepsin. A Handbook of Health In general, it was found that, when the albumin was coagulated at a temperature of 180°, it was more rapidly and completely dissolved in the pepsin than when coagulated at a temperature of 212°. Human Foods and Their Nutritive Value But our celebrated writer-friends overlook the fact that glamour and "sweet bloom" are so much pepsin to help weak stomachs digest strong joy. The Joyful Heart The latter are dissolved in the water and include, besides several salts, three active chemical agents—hydrochloric acid, pepsin, and rennin. Physiology and Hygiene for Secondary Schools After dinner eat four pepsin tablets and send for the doctor. The Silly Syclopedia So nature knew just what she was doing when she provided pepsin and acid and warmth in the stomach. A Handbook of Health Some of the more important ferments are: ptyolin of the saliva, pepsin of the stomach, and pancreatin and diastase of the intestines. Human Foods and Their Nutritive Value The Nurse brought the pepsin and a medicine glass and the Staff Doctor swallowed and grimaced. Love Stories This is accomplished by the trypsin, which is similar to, but more active than, the pepsin. Physiology and Hygiene for Secondary Schools It takes up water from the gastric juice, which prevents the pepsin from mixing well with the food, and hinders the change of the food into chyme, which cannot take place without pepsin. Object Lessons on the Human Body A Transcript of Lessons Given in the Primary Department of School No. 49, New York City This juice contains a ferment called pepsin and hydrochloric acid. The Chemistry of Food and Nutrition The use of pepsin for this purpose cannot serve nature's purpose, as it contains neither sodium carbonate nor sodium sulphate. Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration Practically all contain aloes, and very rarely a minute quantity of a digestive ferment like pepsin. Epilepsy, Hysteria, and Neurasthenia Their Causes, Symptoms, & Treatment Junket, or Milk Curd.—Heat a cup of fresh milk to 85°, add one teaspoonful of the essence of pepsin, and stir just enough to mix thoroughly. Science in the Kitchen. It consists mainly of dilute hydrochloric acid and the ferment pepsin. The Gutenberg Webster's Unabridged Dictionary Section F, G and H As long as proteid food is present, the pepsin and acid expend themselves on it, and are removed together. The Chemistry of Food and Nutrition He suffered from dyspepsia, and he might often be seen sucking a tablet of pepsin; in the morning his appetite was poor; but this affliction alone would hardly have impaired his spirits. Moon and Sixpence In a 50% solution or stronger—as when neat whisky is taken—alcohol precipitates the pepsin which is an essential of gastric digestion, and thereby arrests this process. The Project Gutenberg Encyclopedia Volume 1 of 28 We took it out in gum— spruce and pepsin. Amarilly of Clothes-line Alley The hydrochloric acid and the pepsin in the gastric juice then begin to break down and dissolve the clots, and the process of digestion is completed in the small intestines. Maintaining Health Formerly Health and Efficiency I had to give him five pepsin lozengers and some pepper tea. Samantha on the Woman Question But vespers will have begun already, and I've forgotten my pepsin! Swann's Way As the food moves through the alimentary canal, it is mixed with the various digestive juices containing ferments, such as pepsin, which are the active agents of digestion. The Prospective Mother, a Handbook for Women During Pregnancy Others had mixed pepsin in their edible rubber goods of various flavors. We Can't Have Everything The glycerine dissolves the pepsin, and on filtering, a glycerine extract with high digestive properties is obtained. A Practical Physiology Will pepsin act in the presence of alcohol? Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics It had sounded just like pepsin, and he didn't believe there was such a word. The Little Warrior All articles of food are not, however, equally efficient in producing this effect: thus meat requires more pepsin for satisfactory digestion than bread, and consequently meat calls forth a larger quantity of gastric juice. The Prospective Mother, a Handbook for Women During Pregnancy We may, therefore, conclude that the ferment of Drosera is closely analogous to, or identical with, the pepsin of animals. Insectivorous Plants Its chief constituents are two ferments called pepsin and rennin, free hydrochloric acid, mineral salts, and 95 per cent of water. A Practical Physiology I believe it is usually prepared from pieces of horn steeped in pepsin, hydrochloric acid, and water for a long time. The Treasure-Train It is possible to take lactase to break down the milk sugars for example; sometimes aids such as hydrochloric acid, pepsin, and pancreatin help. How and When to Be Your Own Doctor They alone are attacked by pepsin, a ferment secreted by the mucous membrane of the stomach. The Prospective Mother, a Handbook for Women During Pregnancy In like manner, the glands of the stomach of animals secrete pepsin, as Schiff asserts, only after they have absorbed certain soluble substances, which he designates as peptogenes. Insectivorous Plants Half fill with dilute hydrochloric acid three large test tubes, labelled A, B, C. Add to each a few grains of pepsin. A Practical Physiology "Why, the pepsin of the stomach won't digest it," he returned. The Treasure-Train To this class are thought to belong the diastase of malt and the pepsin of the stomach. An Introduction to Chemical Science Moreover, since pepsin is able to act only when an acid is present, the gastric mucous membrane also secretes hydrochloric acid. The Prospective Mother, a Handbook for Women During Pregnancy Some soluble matter, however, was extracted from the mucin, pepsin, and chlorophyll, used by me, both by the secretion and by artificial gastric juice. Insectivorous Plants Alcohol coagulates the pepsin, which is the dissolving element in this important gastric fluid. A Practical Physiology It's his last night," she said, "and he has promised not to smoke any cigarettes and I've given him two pepsin tablets. Tish The reason is the failure of the pepsin to act on epidermic substances. The Life of the fly; with which are interspersed some chapters of autobiography Between blasts she resorted to Epictetian philosophy in the form of pepsin chewing gum. The Four Million Dr. Lauder Brunton at my request endeavoured to ascertain whether pepsin with hydrochloric acid would digest pepsin, and as far as he could judge, it had no such power. Insectivorous Plants This deposit contains the pepsin of the gastric juice, the potent element by which it does its special work of digestion. A Practical Physiology "If you would eat it and then take some essence of pepsin—" she hazarded. Tish The dish suits them; only, by the action of their pepsin, it becomes so fluid that they die submerged. The Life of the fly; with which are interspersed some chapters of autobiography Hundreds of the excited mob press close to the cowering motorman, whose hand is observed to tremble perceptibly as he transfers a stick of pepsin gum from his pocket to his mouth. Waifs and Strays Part 1 Dr. Lauder Brunton informs me that from experiments made at my request at St. Bartholomew's Hospital it appears that urea is not acted on by artificial gastric juice, that is by pepsin with hydrochloric acid. Insectivorous Plants The pepsin in the presence of the acid digests the casein, gradually dissolving it, forming a straw-colored fluid containing peptones. A Practical Physiology Frankland has told me how to test in a rough way for pepsin; and in the autumn he will discover what acid the digestive juice contains. Life and Letters of Charles Darwin — Volume 2 Each spot touched receives a grain of some subtle pepsin, which soon suffices to make that spot run in every direction. The Life of the fly; with which are interspersed some chapters of autobiography In virtue of this strange property, pepsin and the allied substances were spoken of as ferments, but more recently it is customary to distinguish them from such organized ferments as yeast by designating them enzymes. A History of Science — Volume 4 Some of the secretion was scraped off and examined under a high power; and it abounded with granules undistinguishable from those of pepsin left in water for the same length of time. Insectivorous Plants To show that pepsin and acid are necessary for gastric digestion. A Practical Physiology Some of the glands which had been in contact with the particles of pepsin, or with the acid secretion surrounding them, were singularly pale, whereas others were singularly dark-coloured. Insectivorous Plants They would obtain a product of the highest quality, for the carnivorous worm also owns its pepsin, pepsin of a singularly active kind, as the following experiments will show us. The Life of the fly; with which are interspersed some chapters of autobiography And the chemists soon discovered that in each one of the essential digestive juices there is at least one substance having certain resemblances to pepsin, though acting on different kinds of food. A History of Science — Volume 4 I therefore asked Dr. Burdon Sanderson to try gluten in artificial digestive fluid of pepsin with hydrochloric acid; and this dissolved the whole. Insectivorous Plants Take three beakers, or large test tubes; label them A, B, C. Put into A water and a few grains of powdered pepsin. A Practical Physiology I first used the common pepsin sold for medicinal purposes, and afterwards some which was much purer, prepared for me by Dr. Moore. Insectivorous Plants It simply becomes moist on the surface; and even this moisture may come from the pepsin, which is highly absorbent. The Life of the fly; with which are interspersed some chapters of autobiography Does the coprinus digest itself by virtue of a pepsin similar to the maggots'? The Life of the fly; with which are interspersed some chapters of autobiography With animals, according to Schiff,* mechanical irritation excites the glands of the stomach to secrete an acid, but not pepsin. Insectivorous Plants The structural changes induced by habitual use of alcohol and the action of this agent on the pepsin, seriously impair the digestive power. A Practical Physiology The value of chemist's pepsin is estimated by the quantity of hard-boiled white of egg which a gram of that agent can liquefy. The Life of the fly; with which are interspersed some chapters of autobiography No pig's or sheep's pepsin can rival that of the worm. The Life of the fly; with which are interspersed some chapters of autobiography I have a bottle of pepsin that comes from the School of Chemistry at Montpellier. The Life of the fly; with which are interspersed some chapters of autobiography Yet neither pepsin nor an acid by itself has any such power.* Insectivorous Plants This curious analogy of properties, positive for albuminous, negative for fatty matter, proclaims the similarity and perhaps the identity of the dissolvent discharged by the grubs and the pepsin of the higher animals. The Life of the fly; with which are interspersed some chapters of autobiography The maggot ripe for burial perforates a membranous obstacle which the grub intent upon its broth would not even have attempted to attack with either its pepsin or its grapnels. The Life of the fly; with which are interspersed some chapters of autobiography In the same way, ordinary pepsin does not attack fatty substances; it takes pancreatin to reduce them to an emulsion. The Life of the fly; with which are interspersed some chapters of autobiography This is done in each instance without violence, probably by means of a special pepsin, which is not the same in both cases. The Life of the fly; with which are interspersed some chapters of autobiography |
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