| 单词 | butyric |
| 例句 | Females produce seeds with an outer fleshy layer that contains butyric acid, the signature scent of human vomit. Ginkgo trees nearly went extinct. Here’s how we saved these ‘living fossils.’ 2023-10-04T04:00:00Z Animal fats with stearic acid and palmitic acid contained in meat, and the fat with butyric acid contained in butter, are examples of saturated fats. Concepts of Biology 2013-04-25T00:00:00Z The esters formed from butyric acid are pleasant-smelling compounds found in fruits and used in perfumes. Chemistry 2019-02-14T00:00:00Z Talk then turned to the possible use of butyric acid, which can damage skin and eyes. Meetings of activists planning to disrupt inauguration were infiltrated by conservative group 2017-01-24T05:00:00Z An eyeless tick’s includes not just the smell of butyric acid, which wafts from mammalian skin, but the years-long wait for a moment of succulent opportunity. The Man Who Became a Goat 2016-05-23T04:00:00Z She added that butyric smells, while rancid on their own, were important as elements in fruity scents, like an apple or a red fruit fragrance. The Smells of Summer 2015-08-19T04:00:00Z This partially sours the milk, and creates butyric acid - a compound found in such diverse substances as parmesan cheese and baby spit-up. Does Cadbury chocolate taste different in different countries? 2015-03-18T04:00:00Z Koch and others now assert that a bacillus produces the souring of milk, and another the butyric acid fermentation. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The same man described butyric acid as “very efficient” and “very smelly” and said that “a little bit goes a long way. . . . That stuff is nasty enough that it will seep, it will spread.” Meetings of activists planning to disrupt inauguration were infiltrated by conservative group 2017-01-24T05:00:00Z The flesh becomes soft, then soup-like, and finally putrefies to a liquid mass with a vile smell of butyric acid, etc., in which the starch grains may be seen floating. Disease in Plants 2012-03-01T03:00:22Z It is an oil, possessing a smell like that of butyric acid. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Uexküll used the example of a tick that reacted to gradients of light, butyric acid, and warmth. The Evolution of Common Sense 2011-05-24T14:45:00.243Z Fatty Acids, the homologues of formic and acetic acid; so called because the members first studied were obtained from fats and oils, e.g. butyric acid from butter, stearic acid from stearin, palmitic acid from palm-oil. The New Gresham Encyclopedia Volume 4, Part 3: Estremoz to Felspar 2011-04-14T02:00:59.373Z Part V.—The different fermentations that occur in the sugar factory including lactic, butyric, alcoholic and dextran are discussed. The Philippine Agricultural Review Vol. VIII, First Quarter, 1915 No. 1 2011-04-13T02:00:12.527Z Bacillus amylobacter usually accompanies the lactic acid organism, and decomposes lactic and other higher acids with formation of butyric acid. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 3 "Fenton, Edward" to "Finistere" 2011-03-14T03:01:00.580Z He proved this very clearly for the lactic acid and butyric acid fermentations. Makers of Modern Medicine 2011-03-05T03:00:29.580Z When closely packed, the supply of oxygen is limited; and the attendant acid fermentation brings about the decomposition of the carbohydrates present into acetic, butyric and lactic acids. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z It serves as the ferment to excite lactic and butyric fermentation with the aid of the bran and madder, the necessary hydrogen being thus evolved. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z The baby vomits frequently, the vomitus being acid in reaction and odor, the latter due to the presence of fatty acids, butyric acid, etc. Dietetics for Nurses The flask on the right shows the gassy curd formed by butyric acid bacteria in heated milk. Outlines of dairy bacteriology A concise manual for the use of students in dairying During the initial stage butyric acid fermentation takes place, but is prevented from becoming predominant by the action of the keffir yeast. The Bacillus of Long Life a manual of the preparation and souring of milk for dietary purposes, together with and historical account of the use of fermente The next step was the discovery of the ferment of butyric acid, a species of vibrio consisting of little rods united in chains of two or three and possessed of movement. Great Men and Famous Women. Vol. 6 A series of pen and pencil sketches of the lives of more than 200 of the most prominent personages in History The souring of milk, the formation of butyric acid, the making of vinegar from cider, are all examples of fermentative changes. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying The types of fermentation taking place in the stomach are alcoholic, lactic, butyric, acetic, formic, oxalic, and cellulose. Dietetics for Nurses A fermentation that is much less frequently noted than the two previously discussed is known as the butyric fermentation, since butyric acid is the principal by-product. Outlines of dairy bacteriology A concise manual for the use of students in dairying When it is retained in the stomach, kephir goes on fermenting, and there are developed in the contents butyric and acetic acids, which aggravate the digestive disturbances. The Bacillus of Long Life a manual of the preparation and souring of milk for dietary purposes, together with and historical account of the use of fermente The distillate "B" may contain formic, acetic, propionic, butyric and benzoic acids. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Most of the butyric class of bacteria are spore-bearing, and hence they are frequently present in boiled or sterilized milk. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying In cases where this fat is used in the form of cream, the amount must be cut down or entirely abandoned when there are evidences of butyric fermentation. Dietetics for Nurses Pasteurized milk under the action of the butyric acid bacteria undergoes a gassy fermentation, developing a pronounced acidity and the disagreeable odor of butyric acid, which resembles that of rancid butter. Outlines of dairy bacteriology A concise manual for the use of students in dairying Simultaneously a true lactic acid fermentation proceeds and eventually gives place to a subsequent 97 secondary production of butyric acid. The Bacillus of Long Life a manual of the preparation and souring of milk for dietary purposes, together with and historical account of the use of fermente Beer is assailable by all the organisms here referred to, some of which produce acetic, some lactic, and some butyric acid, while yeast is open to attack from the bacteria of putrefaction. Fragments of science, V. 1-2 In most cases, butyric acid is prominent, but in addition to this, other organic acids, as lactic, succinic, and acetic, are produced, likewise different alcohols. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying Stale beef and that cut from an old steer exhales a pungent odor of butyric acid. Dietetics for Nurses The butyric acid organisms are spore forming and may at times produce their characteristic fermentation in pasteurized milk. Outlines of dairy bacteriology A concise manual for the use of students in dairying The acids were chiefly acetic and butyric acid, the ratio of the former to the latter being 1.7: 1. Researches on Cellulose 1895-1900 Air, or rather the oxygen of the air, which is absolutely necessary to the support of the bacteria of putrefaction, is, according to Pasteur, absolutely deadly to the vibrios which provoke the butyric acid fermentation. Fragments of science, V. 1-2 Concerning the chemical origin of butyric acid there is yet some doubt. Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying The substances formed as a result of this activity are certain acids—lactic, butyric, formic, acetic, oxalic, and possibly alcohol. Dietetics for Nurses Sulphuric, phosphoric, acetic or butyric acids, or sodium bisulphate, may be used without much influence on the result. The Handbook of Soap Manufacture This can be prepared by combination of butyric acid from stale butter with alcohol which supplies the ethyl radical. Human Foods and Their Nutritive Value Precisely the reverse of all this occurs with the vibrios of butyric acid. Fragments of science, V. 1-2 Derivatives of butyric acid are present in butter and impart to it its characteristic flavor. An Elementary Study of Chemistry Butter is the best and most wholesome of our common fats because it is most easily digested, most readily absorbed, and least likely to give rise to this butyric acid fermentation. A Handbook of Health An article is even in the market called "Essence of Cognac," but which is nothing more than very badly made butyric ether. The Art of Perfumery And Methods of Obtaining the Odors of Plants Lactic and butyric acids are known to be formed, and for purposes of calculation, the total acidity is expressed in terms of lactic acid. Human Foods and Their Nutritive Value If there be also any butyric acid, or some other fatty acid, derived from milk, butter, cheese, &c., there will be acid eructations. The Chemistry of Food and Nutrition The flavor of the fat is due to the presence of a small amount of butyrin, which is an ethereal salt of butyric acid. An Elementary Study of Chemistry The odor of the infant is said to be of butyric acid; that of old people to resemble dry leaves. Studies in the Psychology of Sex, Volume 4 Sexual Selection In Man Pine-apple Oil is a solution of one part of butyric ether, in eight or ten parts of alcohol. The Art of Perfumery And Methods of Obtaining the Odors of Plants These are ferments, such as Bacillus amylobacter, or butyric ferment, and B. septicus, or ferment of the putrefaction of nitrogenized substances. Scientific American Supplement, No. 446, July 19, 1884 Conine, on oxidation, yields chiefly butyric acid, but among the products of oxidation has been found the pyridine carboxylic acid before referred to. Scientific American Supplement, No. 415, December 15, 1883 Nursing infants have a peculiar sourish smell, caused by the butyric acid of the milk, while bottle-fed children smell like strong butter. Anomalies and Curiosities of Medicine Stale butter or that which is improperly kept develops an acid called butyric acid, which gives a disagreeable odor and flavor to butter and often renders it unfit for use. Woman's Institute Library of Cookery Volume 2: Milk, Butter and Cheese; Eggs; Vegetables Bensch's process, above described, for the production of butyric acid, affords a remarkable exemplification of the extraordinary transformations that organic bodies undergo in contact with ferment, or by catalytic action. The Art of Perfumery And Methods of Obtaining the Odors of Plants And of late years a number of other compounds, such as butyric acid, and others, have been added to the list. Darwiniana : Essays — Volume 02 It was found that whereas 10 cub. cent. of a liquid containing the ordinary proportion of hydrochloric acid digested 0.1311 gramme, a similar liquid prepared with butyric acid digested 0.0455 gramme of fibrin. Insectivorous Plants The wards containing women and children are perfumed with butyric acid, while those containing men are influenced by the presence of alkalies like ammonia. Anomalies and Curiosities of Medicine The liquid became turbid from a development of bacteria and then underwent butyric fermentation. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The acid of the lactate of lime, thus produced, is by the further influence of the ferment changed into butyric acid. The Art of Perfumery And Methods of Obtaining the Odors of Plants Quite a number of species of bacteria can produce butyric acid, and they produce it from a variety of different sources. The Story of Germ Life The number obtained, however, corresponded nearly with that of propionic acid; and I believe that this, or a mixture of acetic and butyric acids, were present in the liquid. Insectivorous Plants Further, 100 parts of aldehyde hydrated butyric acid and acetic ether contain the same elements in the same proportion. Familiar Letters on Chemistry We have met with butyric fermentations of lactate of lime which did not yield the minutest trace of hydrogen, or anything besides carbonic acid. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) For the preparation of this ether, pure butyric acid must be first obtained by the fermentation of sugar, according to the method of Bensch. The Art of Perfumery And Methods of Obtaining the Odors of Plants The flavor of butter is due to the presence of five or ten per cent of butyric and other acids of the same series. An Introduction to Chemical Science The writer found that we can produce this membrane in the unfertilised egg by certain acids, especially the monobasic acids of the fatty series, e.g. formic, acetic, propionic, butyric, etc. Darwin and Modern Science We may pause to consider an interesting question in reference to the two characters under which vibrios appear in butyric fermentations. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) It follows that the deposit of vibrios of a completed butyric fermentation may be kept, at least for a certain time, without losing the power of causing fementation. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The whole is mixed with half its volume of water, and the upper stratum then removed; the heavy fluid is distilled, by which more butyric ether is obtained. The Art of Perfumery And Methods of Obtaining the Odors of Plants In studying butyric fermentation, for example, we endeavoured to establish these two fundamental points; 1. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) They asserted that one and the same nitrogenous substance might undergo various modifications in contact with air, so as to become successively alcoholic, lactic, butyric, and other ferments. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) Must we, then, believe that such vibrios are absolutely different from those of butyric fermentations? The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) Why, for instance, has Dr. Brefeld omitted the facts bearing on the life of the vibrios of butyric fermentation? The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The product will be about 28 ounces of pure butyric acid. The Art of Perfumery And Methods of Obtaining the Odors of Plants The vibrios of butyric fermentation, for instance, will propagate with remarkable facility under these circumstances. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The cells belonging to the grains of barley, or their albuminous contents, never do produce cells of alcoholic ferment, or of lactic ferment, or butyric vibrios. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) For greater security, we may add to the fermentable liquid, at the moment when it is prepared, a very small quantity of tartaric acid, which will prevent the development of butyric vibrios. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) M. Bechamp, who studied these, recognized several belonging to the series of fatty acids, acetic acid, butyric acid &c. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The butyric ether which is employed in Germany to flavor bad rum, is employed in England to flavor an acidulated drink called pine-apple ale. The Art of Perfumery And Methods of Obtaining the Odors of Plants It furnishes a butyric ferment, capable of revival and action in a suitable fresh fermentable medium. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) But how could we reconcile this, supposing it were proved to be the case, with the fact just insisted on as to the danger of bringing the butyric vibrios into contact with air? The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The Academy may remember that I have previously demonstrated facts of this nature in regard to the vibrio of butyric fermentation, which not only lives without air but is killed by the air. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The question has been raised whether vibrios, especially those which we have shown to be the ferment of butyric and many other fermentations, are in their nature, animal or vegetable. The Harvard Classics Volume 38 Scientific Papers (Physiology, Medicine, Surgery, Geology) The sample I analyzed was purer, and appeared to have been made with pure butyric ether. The Art of Perfumery And Methods of Obtaining the Odors of Plants |
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