Seaweed sap along with residues of polysaccharide is an effective bio-stimulant. Inexpensive seaweed base bio-stimulant development technology with naturally occurring plant growth hormones, macro and micro-nutrients, amino-acid, and residues of polysaccharide not only promote plant growth and yield but also increase soil water holding capacity for moisture stress condition.

Carrageenan and Agar, naturally occurring sulphated polysaccharide from red seaweed is extensively used in food and dairy industries for thickening, gelling and stabilizing properties. It is a worldwide approved additive for dairy and food products. Agar is also widely used in micro-biology, plant tissue culture field. Agarose, one of the components of agar is extensively used in molecular biology.

Extensive study on bio-active compound extracted from seaweeds have been shown to possess broad spectrum of biological activities including, antiviral, anticancer, anti-inflammatory, antioxidants, fat lowering, neuroprotective etc. seaweed are rich in bioactive compounds including pigments, phlorotannins, polysaccharides, peptides, mineral, and vitamins. Alginic acid has major use in the manufacturing of tablets, pills and ointments as emulsifiers.

Seaweed polysaccharide carrageenan, agar and alginate are used extensively in cosmetic products including ointment creams, lotions, toothpaste as thickening agent and as additive in hair dyes, shampoos etc.

The naturally occurring pigments in red, green and brown seaweeds including chlorophyll, carotenoids, phycobiliproteins, beta carotene and lutein are used for the extraction of natural dyes in textiles. Due to rich in bioactive compounds, seaweed is potentially being exploited as functional ingredients in area of medical textile.

Processed seaweed residues are also rich enough in essential nutrients for animal feed. Seaweed base animal feed helps in increasing milk and its fat as well as low methane gas emission.