Cellulose (C 6 H 10 O 5) n is one of the most ubiquitous organic polymers on the planet. It is a significant structural component of the primary cell wall of green plants, various forms of algae and oomycetes. It is a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1 → 4) linked d-glucose units. There are various extraction procedures for cellulose developed by using different processes like oxidation, etherification and esterification which convert the prepared celluloses in to cellulose derivatives. Since it is a non-toxic, biodegradable polymer with high tensile and compressive strength, it has widespread use in various fields such as nanotechnology, pharmaceutical industry, food industry, cosmetics, textile and paper industry, drug-delivery systems in treating cancer and other diseases. Micro-crystalline cellulose in particular is among the most frequently used cellulose derivatives in the food, cosmetics, pharma industry, etc. and is an important excipient due to its binding and tableting properties, characterized by its plasticity and cohesiveness when wet. Bacterial cellulose's high dispensability, tasteless and odourless nature provides it with lot of industrial applications. Currently, about half of the waste produced in India contains about 50% cellulose which can be used productively. This chapter deals with the chemistry of cellulose, its extraction and its properties which help various industries to make the most of it.

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A B S T R A C T BACKGROUNDJob satisfaction level helps to identify an individual's general attitude and interest towards workplace. The aim of the present study was to evaluate the level of job satisfaction of Class III and Class IV workers in healthcare institution in Maharashtra. METHODSThe study was conducted among 100 employees of which, 52 were Class III and 48 were Class IV workers. A questionnaire containing 17 items was used (UWES-17). UWES is a test to measure work engagement both on an individual and on group level. UWES utilizes three scales to determine the level of work engagement: vigour, dedication, and absorption. All these items were in 7-point Likert scale with a score range from zero (never) to six (always). Higher scores in all cases indicated greater job satisfaction. Data was analysed using independent t-test and one-way ANOVA. RESULTSThe result showed that satisfaction value is slightly more in Class IV workers (35.04) with a statistically significant (0.011) value. CONCLUSIONSFindings of this study show that modification in the workplace will aid in increasing the involvement of employees that will further increase productivity level in organizations and job satisfaction among workers.