9788176221160 - principles of fruit preservation von morris, thomas norman (2 Ergebnisse)
- Hardcover
Anbieter: Majestic Books, Hounslow, Vereinigtes KönigreichMajestic Books
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Zustand: New. pp. ix + 206 36 Figures.
- Hardcover
Anbieter: Vedams eBooks (P) Ltd, New Delhi, IndienVedams eBooks (P) Ltd
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Hardcover. Zustand: New. 2nd Edition. Contents Introduction the composition of fruits. I. Jams and fruit jellies refrigerated fruits candied fruits fruit juices 1. Fruit pectins. 2. The pectin sugar acid gel. 3. The manufacture of jams and fruit jellies. 4. Refrigerated fruits. 5. Drained candied crystallised and glazed fruits.…6. Unfermented fruit juices and fruit syrups. II. Fruit canning 7. General account of the processes. 8. Spoilage. 9. Examination of canned fruits for factory control and diagnosis of the causes of spoilage. 10. Fruit bottling. III. Dried fruits 11. Degrees of dryness and estimation of moisture content. 12. Methods of drying fruits. 13. Storage of dried fruits. 14. Principles of dehydration. IV. Some general considerations 15. Discoloration in fruit products. 16. Vitamins in preserved fruits. Author Index. Subject Index. The book deals with the scientific principles and control of the various processes involved in the manufacture of jams and fruit jellies fruit canning and fruit drying. For an understanding of these it has been necessary to give some account of the composition of fruits especially in regard to their contents of acids sugars and pectin. The manufacture of jams and jellies in particular involves a delicate balance between these three classes of substances hence pectin and pectin sugar acid gel are treated at length. The various methods of preserving fruits for jam making and canning out of season are also described and there is an account of the control of the actual manufacturing processes by the works chemist. In the section on fruit canning considerable space has been allotted to the problems of can corrosion a major source of trouble with certain products especially in warm climates. The various stages of the canning process are also described and discussed in their proper sequence and there are chapters on the standardisation and examination of canned products and on fruit bottling. The section on fruit drying deals with recent researches both in connection with sun drying and with artificial dehydration. Also given with subject of prune drying and drying of grapes. There are also discussions of the problems connected with the storage and packing of dried fruits and of the general considerations in constructing and working a dehydrating plant. 206 pp.
