Studies on Peaches: I. Compiled Analyses of Peaches, II. Changes in Chemical Composition of the Peach During Growth and Ripening, III. Effect of Storage on the Composition of Peaches (Classic Reprint) by W D Bigelow (Paperback / softback, 2015)
Excerpt from Studies on Peaches: I. Compiled Analyses of Peaches, II. Changes in Chemical Composition of the Peach During Growth and Ripening, III. Effect of Storage on the Composition of Peaches Very few complete analyses of peaches seem to have been made. The methods for the examination of products of this kind have been greatly improved during recent years and the results of later analyses, for this reason, are much more reliable than earlier ones. Considering the large number of analyses of apples, pears, and some other varieties of fruits that have been published, it is a matter of surprise to te how few peach analyses have been reported. The only published analyses with which the writers are familiar are collected in Table I. From this table it will be ted that of the analyses made according to modern methods only those of Kulisch and Girard are at all complete. I. Compiled Analyses Of Peaches. Geiseler and Lehmann obtained amygdalin from peach kernels (Kernen), Geiseler finding 3 percent and Lehmann 2.35 percent of the glucoside. Ritthausen investigated the proteid of peach kernels and found it to be similar to the conglutin in lupines. Considerable work has been done on the oil from peach kernels, chiefly with regard to its use as an adulterant of, almond oil, for which the reader is referred to standard works on oils. Bauer isolated galactose from the sulphuric acid hydrolysis product of peach gum. Stone prepared galactose and arabise from peach gum. Gum from the peach tree, as well as the gum from peaches, yielded the above sugars. Storer reported the proximate composition of peach stones as obtained by the Weedne method. Storer later examined peach stones, using chiefly Lange's method of fusion with caustic potash for the estimation of cellulose. The method yielded a cellulose having a very high content of pentosans(45.23 percent). The filtrate from the reaction product yielded about 15 percent of Lange's lignic acid. Two nitric-acid methods were tried, but t the chlorination method of Cross and Bevan. Storer concludes that peach stones probably contain a smaller proportion of true cellulose than occurs in various kinds of woods. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art techlogy to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.