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10. Summary 1/
JONATHAN W. WHITE, JR.
Eastern Regional Research Laboratory
Eastern Utilization Research and Development Division
Agricultural Research Service, United States Department of Agriculture
Philadelphia 18, Pennsylvania
This is the last of a series of ten articles on the different
honeys of America.
In the previous articles in this series, we have attempted to
describe briefly the high-lights of our analytical survey of
the composition of American honeys. We have presented average
values for the composition of honey, based on 490 analyses, and
for honeydew based on 14 analyses. A listing of 74 types of honey
and 4 honeydews has been included which shows generally how the
various kinds of honey compare with average values and with one
another.
The kinds of sugars, rare and common, that are found in honey
were discussed. All honey samples were found to have the same
sugars present, but the relative amounts did differ considerably.
Differences in composition of honey have been considered that
can be ascribed to area of production. Probably the only reliable
way to assess this factor is by statistically comparing average
values for several samples of the same type of honey from different
areas.
In other articles the relationship of color and of granulating
tendency of honey to its composition were discussed. It was shown
that the granulating tendency of honey can be predicted from
its dextrose and water content. A D/W ratio of 1.70 or less generally
means a non-granulating honey, while a value of 2.10 or more
predicts a relatively rapid complete granulation. Values between
these imply partial granulation.
In comparing dark honeys with light honeys, we have confirmed
that the former show higher ash and nitrogen contents. We have
also shown that the dark honeys are lower in dextrose and levulose
content, granulate less, and are higher in acids.
Storage of honey at ordinary temperatures has been seen to cause
considerable loss in free simple sugars, increases in more complex
sugars, some increase in acids and rather considerable (3% per
month) losses in diastase content.
The laboratory work in this project, representing nearly 10,000
separate analyses, was carried out by the individuals named in
the first article in this series. We could not have done this
work without the active cooperation of hundreds of honey producers,
packers, extension specialists, apiary inspectors, national and
state organizations and their officers and others. They cannot
be named here, but we are greatly appreciative of their cooperation.
All of the individual analytical results, complete descriptions
of all samples, and names of those cooperating appear in the
final technical bulletin to be published by the Department of
Agriculture. This will also contain descriptions of the analytical
methods used, a review of the literature and show the statistical
evaluations of the data.
In addition to the principal tables of data, averages are included
for all floral types and blends in which more than one representative
was present. Average values of all honey samples as classified
by plant family is given, and a table showing the average composition
of honey from each of the 47 states having samples, as well as
a map showing sample distribution.
No mention has been made in these articles of the flavor of honey.
This does not mean that it is not considered important, but simply
that it is difficult to measure and practically impossible to
describe. It is, of course, probably the most important single
attribute of honey, and possibly the one that is least understood
chemically. More attention should be given to flavor and its
maintenance in honey, especially protection against processing
factors within our control.
1/ This is one in a series of articles
describing a large-scale study of the composition of honeys from
over the United States. Complete data interpretation and conclusions
will appear in a forthcoming Department of Agriculture publication. |
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