METHOD FOR RAPID DETERMINATION sugar content of the pear fruit

摘要

Method rapid determination of sugar content in the fruits of pear by refractometer, characterized in that the drawing medium is carried out by removing samples under study with at least 3-5 trees at least 30 pieces of typical shape, color, and degree of ripeness of fruit, in proportion placing crop fruit divide two - colored and uncolored parts thereof, of which two segments are cut radially to a thickness of 1 cm, and the sample is thoroughly pulverized and 1 g sample is taken, the sample preparation for measurement comprises diluting sample istillirovannoy water in a ratio of 1: 4 by weight, and obtaining a homogeneous mass by trituration in a mortar, its filtration and pipetting the solution volume of at least 3 drops, and the dimension includes reading from the device index of the scale, with the dilution 5 times calculate the total sugar content in percentage crude mass.