Introduction
It
is well that Tulsi (Ocimum Sanctum) an Ayuredic herb has several curative
properties. One of the important medical values of Tulsi is its antibacterial
activity. Tulsi is a small herb which is widely distributed in India. It grows in all climatic conditions. Two varieties of tulsi plants are recognized
are slightly violet in colour and another is slightly green in colour. Tulsi is
recognized by its pleasant odour. Its anti bacterial property may be due to
some of organic compounds like camphor, camphere, cineole, limolene, pine (a,b) present in
it. Tulsi is used in cosmetics, soaps and hair oils. Tulsi leaf has the
property of antifungal, antibacterial and antiseptic.
Experimental
1.
Chemicals
NaOH.
LR, Na2Co3. LR, Soap, Na2SiO3 LR, H2O2,
distilled water, CuSo4, K2Cr2O7 and
acetone LR are the main chemicals used for the experiment.
Treatment
for grey cotton fabric:
(a)
Desizing:
The
grey cotton fabric was desized with alkali and soap solution. In same bath
scouring was also done. The bath composition for desized and scouring process
is as follows.
NaOH
2 g/l
Na2Co3
2 g/l
Soap
1 g/l
Weight
of grey fabric 80 gm
Time
for heating 1 hour
Temperature
of the bath - 100°C
The
process can be represented by a line diagram as shown below
The
fabric after desizing and scouring is swilled with water until all alkali and
soap is removed.
(b)
Bleaching:
The
post treated fabric was bleached with suitable bleaching agent to get a white
fabric. The composition of the bleaching bath is given below with experimental
conditions.
Na2SiO3
2 g/l
NaOH
2 g/l
Na2Co3
2 g/l
H2O2
12 ml/l
Weight
of grey fabric 80 gm
Time
for bleaching 1 hour
Temperature
of the bath - 80°C
