This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...and development of the desirable lactic acid organisms to the exclusion of the undesirable microbes, though this is by no means always the case. Occasionally, even with the most scrupulous adherence to sanitation, cream will not ripen properly and these occasional failures have prompted the more progressive dairymen to ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...and development of the desirable lactic acid organisms to the exclusion of the undesirable microbes, though this is by no means always the case. Occasionally, even with the most scrupulous adherence to sanitation, cream will not ripen properly and these occasional failures have prompted the more progressive dairymen to inoculate the milk and cream with pure cultures of the desirable cream ripening bacilli. Others use natural cream starters, that is, small quantities of old cream which has ripened with a desirable flavor. Cream should not show colon bacilli in less than 0.10 cc. quantities and fresh unripened cream should not contain more than 5,000, 000 bacteria per cc. Ripened cream should not contain more than 150,000,000 bacteria per cc. and most of which bacteria should be of the lactic acid group. Pathogenic bacteria which may be present in milk may also be present in the cream. Tubercle bacilli, diphtheria bacilli and typhoid bacilli are the most likely to occur. In the case of doubtful cream, the colon bacillus test should not be omitted and in the case of suspected contamination with pathogenic organisms, the cream, as well as the milk from the same source, should be examined, resorting to the usual animal inoculation tests. The tests for the presence of tubercle bacilli in milk, cream, meats, etc., comprises the microscopic examination of stained (ZiehlNeelsen method of staining) sediments or concentrates as may be required, and animal inoculations. For the animal inoculation test, . F.1, ?/ 4?--Tubercle 'bacilli in sputum. guinea-pigs are used. Centrifugalize (in a Stained with carbol, T-., r.1 fuchsin and methy powerful machine) about 250 cc. of the milk ieneblue.--(Pittfield.) in order to throw down the tubercle bacilli (with the other inclusions...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.