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Energy plays a vital role for the development for the human welfare. The global economy totally runs on energy, or we can say that all living things depends on it, for example, plants takes energy from the sunlight, water and minerals, and this process is called photosynthesis, animals takes energy from plants and from one another, whereas humans takes energy from both. As the population increases, the uses of fossil fuels increased rapidly and because of this supply of renewable resources get affected and global warming makes earth more complicated due to increase in carbon dioxide. The production of biodiesel using microalgae biomass appears to be more viable and cheaper. Microalgae are a good source of lipid and triacylglycerol (TAG) that are sustainable feedstock for biodiesel. The present paper is an attempt to know the potential of microalgae for the biodiesel production.

The demand for carotenoids and their derivatives from natural sources is increasing rapidly due to public concern about food safety and health issues, and thus, carotenoid production from microbial fermentation is increasing significantly due to its ability to accumulate higher levels of carotene. Carotenoids, lipid-soluble pigments, are responsible for the vibrant colors in food and microorganisms. Carotenoids have the most important advantages in terms of antioxidant and anticancer activity. These possible applications are used for treating various diseases like xerophthalmia, keratomalacia, skin acne, breast cancer and tumor formation. They are widely used in the pharmaceutical, cosmetics and food industries. Due to the overall increase in the cost of carotenoids, carotenoids are produced in the pharmaceutical, food and cosmetics industries through chemical synthesis or extraction from plants. The oleaginous red yeast, Rhodotorula minuta, is well known for producing a high yield of carotenoids with a low production cost. Over the years, these carotenoids have been produced from oleaginous red yeast, using low-cost substrates or agricultural waste for cost-effective purposes. In this paper, we highlighted the production of carotenoids from oleaginous red yeast and its applications.

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