The Network Project on Harvesting, Processing
and Value Addition of Natural Resins and Gums was launched on 9th
February, 2009 to carry out the location-specific and multidisciplinary
research on different aspects of resins and gums. All the natural resins
are of vegetable origin with the exception of lac and similar insect
exudations which harden on exposure to air. Natural gums come out as
exudates from the trunk of gum producing tree as a response to injury.
Gums are also extracted from seeds, seed coats, micro-organisms etc.
Indonesia, India and China are among the World's major producers of gums
and resins. India is major exporter of lac, guar, karaya, asafoetida and
importer of rosins, gum arabic, asafoetida and olibanum.
Resins are largely used in
surface coating formulations for several applications like wood furniture
polishes/ varnishes, paints, lacquers, food and pharmaceuticals,
adhesives, insulations, cosmetics, handicrafts, jewelry etc. Some of the
resins like lac are very good source of several bio-active compounds of
various uses. The gums and gum-resins are mostly used in food (thickening/
gelling agents, stabilizers, emulsifiers), pharmaceuticals, cosmetics,
textiles and chemical industries. In several application areas there are
no substitutes for these natural products while in some synthetic
alternatives are available and used. In recent years, due to back to the
nature trend there has been a revival of interest in natural resins and
gums extracted from forests by rural and tribal people who depend on these
resources to sustain their livelihood. Two-fold increase in demand is
expected due to realization for eco-friendly and safe natural materials
for human contact and consumption. Keeping in view the immense potential
of these natural, non-toxic and bio-degradable products of social,
livelihood and industrial importance, the ICAR decided to include these as
part of the regular research programmes at Indian Institute of Natural
Resins and Gums, Ranchi.
In order to address the
harvesting, processing and value addition of region-specific gums and
resins, an outreach programme in a Network mode was sanctioned during XIth
Plan with IINRG, Ranchi as lead center and six other Network co-operating
centers. The Network project in XIth Plan covered the aspects of
harvesting/tapping, processing and value addition of three gums (Guar Gum,
Karaya Gum and Gum Arabic), one resin (Pine resin) and one oleo gum-resin
(Guggul).
Apart from these gums and resins covered
under the Network Project during XIth Plan, there were other gums and
resins of commercial importance which needed R&D attention. Hence, three
more centers were included in the project in XIIth plan to look after
these gums and resins (Tamarind seed gum, Dammar and Pinus kesiya resin). |