This slide presentation explains the various nutrient and dietary uses of silkworm pupae which are major byproducts of silk making industry.

1. Nutrient and Dietary
Uses of Silkworm
Pupae.
SER 103 Mulberry Silkworm Rearing.
Course Mentor: Dr Manimegalai
Expounded By:
Chandini S
2013-009-005
I BSc (Sericulture)

2. Silkworm Pupae SWP:
• Silkworm is a holometabolous sericigenous
insect.
• It completes four life stages namely, egg, larva,
pupa and adult.
• Silkworms are reared mainly for silk.
• In the process of reeling the pupae are obtained
as by-products or waste of silk reeling units.

3. Eminence Of SWP:
Silkworm pupae is one
the major by-products
of sericulture. In India ,
23,334 tonnes of dry
pupae is obtained
annually which can
yield 5,833 tonnes of
pupal oil, 8,750 tonnes
of protein and 875
tonnes of amino acid
mixture.

4. • Silkworm pupae have numerous constituents of
great value.
• It consists of fats, oil, protein, glycogen, chitin,
crude fibre, total ash, amino acids and
nitrogen, etc.
• The oil alone constitutes about 30% of the total
dry weight.

5. • Silkworm pupae have been
used as foods in some
countries to provide
nutritional benefits.
• In China, consumption of
SWP has a long history.
• In Japan, SWP were once
important protein sources
in some mountainous
regions.
• Pupae are consumed as a
proteinacious food.

6. • Silkworm pupae meal is a silk industry by-product that in
some countries is available as a local product.
• It contain up to 30% crude fat and 50% crude protein.
• The chemical score of silkworm pupae protein is 60 and
tryptophan is its limiting amino acid.

7. • The silk worm pupae
meal fat contains
25.7% linoleic acid.
• The use of diets
containing 5% to 8%
SWP replaced 50% of
fish meal, lowered
weight gain.

8. • Beondegi is
another Korean
street food.
• It comprises
steamed or boiled
silkworm pupae,
which are
seasoned.
• It is being a
popular snack on
the streets.

9. • In crop production it can be used as an organic source.
• In animal production, de-oiled pupal powder can be directly
used as a feed for fish, poultry bird, for mushroom and
vermiculture.
• As a media in laboratory, culture production.
• Pupal powder can be used for biscuit production.
• Pupal skin contains chitopoly associated with chitosan in
polysonic fibre widely used as blend spun yarn mixed with
cotton, polyester, nylon and rayon.

10. • Pupal use can be utilized in major surgeries to check bleeding
which acts as a bio-compatible membrane.
• Lecithin a phospholipid can be extracted from the pupal oil
which has its utility in pharmaceuticals and also as an anti-
oxidant for vegetable oils and fish-liver oils.
• Amino acid content in the pupal powder makes its utility in
the preparation of protein rich refined oil that can be used as
alternative to edible oil and dalta.

11. References:
“Silkworm Pupae” by
K P Chinnasamy, S Sundar Raj, V P
Bharathi, Changalarayappa

12. Thank
You!!!