The Manufacture of Tomato Products: Including whole tomato pulp or puree, tomato catsup, chili sauce, tomato soup, trimming pulpHier, W. G. (Wayland Gladstone)
Science
The Manufacture of Tomato Products: Including whole tomato pulp or puree, tomato catsup, chili sauce, tomato soup, trimming pulp
Hier, W. G. (Wayland Gladstone)
Tomato products
On account of the fact that a wide-mouthed bottle is used, there is even
more danger of air leakage in the neck of the bottle, causing “black
neck,” than there is in catsup. It is a common sight to see chili sauce
with an inch, or even two inches, of blackening at the top of the
bottle. Sometimes the very finest quality of cork is used, and then
paraffin is put over that, but even then we find that this darkening is
not avoided. I recommend the same procedure here as was given when
discussing this subject on catsup.
If a crown seal, either plain or of the self-opening type, is used as
the closure, a pure cork insert should be used. As mentioned in a
previous chapter, the composition cork insert does not work as well on
wide-mouthed bottles as it does on those with a narrow mouth.
The remarks which were made on the packing of No. 10 and gallon catsup
also apply to the packing of chili sauce in these sizes.
Microscopical Counts
The counts of molds, yeasts and spores, and bacteria in chili sauce
usually run very low. I have never seen a sample that ran high in molds,
and very few that ran high in the other counts. The molds seldom run
higher than 10, and counts of zero are often obtained. This is because
practically all of the mold in tomatoes is on the outside and clings to
the peeling. When the peeling is removed the mold is removed. As the
peeled tomatoes are usually cut and cooked immediately after they are
peeled, there is very little opportunity for the multiplication of
yeasts and bacteria.
Pulping the Trimmings
Trimming pulp, or “skin and core,” as it is sometimes called, is made
from that part of the tomato which is removed when the tomatoes are
peeled. This consists of the peeling, with the tomato substance which
clings to it, and the hard core at the stem end of the tomato.
In as much as practically all of the mold in or on the tomatoes is
retained in the trimmings, it is not an easy matter to work these
trimmings up into a product which will mark up to the government
requirements, and do it economically. If the tomatoes are firm and
largely free from cracks around the stem end it is not so bad, but when
they come in badly cracked, with tufts of mold growing in all the
cracks, as is often the case late in the season, the amount of labor
required to properly sort them makes the working up of trimmings
unprofitable.
When the trimmings show up fairly well, and the labor to handle them is
available, there is no reason why the chili sauce packer or tomato
canner should not utilize what would otherwise be a waste by turning it
into pulp or “trimming catsup.”
Government Attitude on Trimming Pulp
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