for the food processing industry
of Peeling "Waste"
from Mechanically Working Dry Peeling Machines,
Especially of Potato Peeling "Waste"
was our company who developed and marketed the first
carborundum peeling machines and the first blade peeling
machines which can be operated without water/waste water:
peeling by means of more or less rough/fine
is carried out actually by means of blades (not by
means of punched sheet metal) arranged on discs or
far as the peeling of potatoes is concerned, the peeling
"waste" coming from carborundum peeling machines
consists of a floatable and pumpable pulp, while the waste
from blade peeling machines consists of small potato slices
which are not floatable but pumpable in any case.
waste produced, for example, when peeling carrots, beetroot,
onions, shows partly somewhat different properties not to be
composition of the "waste substances" from
mechanically working dry peeling machines corresponds to
that of the peeled tubers or roots themselves.
us treat here that "waste" which is produced while
efforts have hitherto been made in this respect in Western
Europe and what has been practised here, to some extent,
even over longer periods of time?
were attempts to dry the peeling waste in order to
make it suitable for storage. However, the energy
costs in Western Europe were too high and the quantity
of skin waste proved to be too small - even in larger
food producing factories - so that a profitable and
economically rewarding production could not be
some places the peeling waste is siloed and used for
interesting example: the peeling waste from a
carborundum peeling machine is pumped into a large
silo. Tank lorries from specialized firms suck off the
pulp and transport it to large fattening centres (e.
g. for beef cattle). Here, the potato mash for pigs is
heat-treated. This is often done in a steam-heated
spiral blancher. The cattle can digest the mash
The utilization of all kinds of "waste stuff",
including the above described, for feeding has to be
carried out on a scientific base. As a rule, additions
of other types of fodder are required.
potato chip (GB: crisps) producer in Northern Germany
added enzymes to the peeling pulp, thus preparing it
potato peeling factory in the Ruhr District (= mining
and industrial centre in Germany) took the peeling
pulp to a farm nearby. Here, the potato mash was mixed
with maize silage and given to the cattle.
of the potato peeling factories take the peeling waste
to farmers who use the skins for fodder. In many cases
the farmers themselves come to pick up the skins.
does not occur frequently that the skins are dumped on
fields. - Here - as everywhere - local laws and
regulations have to be observed.
alcohol production, from the "waste", is not
worth while in Germany. Government licences are
required. The low-quality potatoes normally used for
the alcohol production are not very expensive.
it is suggested to make the "waste" dryer by
pressing or centrifuging in order to sell it
afterwards. This is done, for example, in bigger
potato processing plants. As far as the assessment of
this procedure is concerned, it must not be overseen
that the fruit water, which is considerably enriched
with various substances, has to be removed afterwards.
In some cases it is collected in artificial ponds (lined,
for instance, with plastic foils) and sprinkled later
are further applications, for example the bio-gas
The above comments are not binding for us. They are not
complete and have not been checked as to their economic
efficiency. In other countries or regions there might be
different conditions that permit different opinions. - The
laws of the country and the directions and orders of the
authorities have to be observed!
paper contains non-committal notes. We do not lay claim to
completeness. Alterations reserved.
Our order confirmation, accepted by our customers, is in
effect upon delivery. The presentation of a new edition of this treatise will
substitute for any previous versions.
by DORNOW food technology GmbH, D-40549 Düsseldorf
total on the Web:
Dornow food technology GmbH,
D-40549 Düsseldorf - Germany, USt-Id.-Nr. DE119264470
Tel. ++49-211-527060, Mobile ++49-172-2614932,
Fax ++49-211-596883, email firstname.lastname@example.org,
AG, Konto-No. 1452333, BLZ 300 400 00, Managing Director Karl-Dietrich
Dornow, Amtsgericht Düsseldorf, HRB 22597