seaweed

2. GROUP MEMBERS
PRESENTATION

3. SINESIS 6
ANKITA ROY
2020349
AHAN MARICK
2020417
BIPLAB SAHA
2020419
SOUVIK KUMAR SAHA
2020395
SHREYA NASKAR
2020429
SHREYA NASKAR
2020431

4. :INTRODUCTION:
What is Seaweed?
 Seaweed, or algae belongs to a group of plant-like
organisms that grows in the Sea.
 Seaweed is a part of healthy diet and as herbal
medicines in many traditional cultures.
 Seaweeds are abundant in coastal areas of Bicol Region.
 The life of seaweed industry is primarily dependent on the
demands for the products.
 Farming seaweeds can be boosted by the
processing/manufacturing industry.
 Seaweeds are one of the most nutritionally dense foods in
the plant kingdom
 Seaweeds are particularly known for their large amounts
of bioavailable minerals like iodine, iron & calcium

5. STRUCTURE OF SEAWEED
 Wide range of growth forms and complexity of structures
 The complete body is known as thallus
 Can be filamented, a thin leafy sheet, or giant kelp
 The leaf-like flattened portions of the thallus are blades
SEAWEED REPRODUCTIVE
STUCTURES:
MICROSCOPIC IMAGES OF MALE AND
FEMALE CONCEPTACLES IN Fucus
vesiculosis RECEPTACLES

6. FIG: SEAWEED FAMILY TREE
SEAWEED
Undaria pinnatifida

7. CLASSIFICATION
SEAWEED
RED ALGAE
• All species are multicellular
• They live in marine environment
• They live attached to rocks by a
structure called a holdfast
• Some species incorporate calcium
carbonate from the ocean into their cell
walls as well
• Their cell walls contain thick
polysaccharides
GREEN ALGAE
• All species are unicellular as well as
multicellular.
• They live mostly in freshwater.
• They are cosmopolitan in distribution.
• Cell wall has two layers. Outer layer
composed of pectose and inner layer
composed of cellulose.
• They possesses chlorophyll a, chlorophyll b
and small number of β-carotenoids.
BLUE GREEN ALGAE
• They include unicellular and colonial
form
• Colonies form filaments, sheets, hollow
balls.
• Filaments differentiate into vegetative
cells, heterocysts and resistant spores.
• Heterocyst is the site of Nitrogen
fixation
• Nitrate and Ammonia absorbed by
plants.
BROWN ALGAE
• The majority are live in marine
environments,on rocks in cool water.
• They contain chlorophyll as well as a
yellow-brown carotenoid called
fucoxanthin.
• The largest of the brown algae are the
kelp.
• The body of a kelp is called a thhalus,
which can grow as long as 180 ft.
• They store their foods and laminarin.

8. FIG: INDIAN RESOURCES AND SCENARIO
FIG: CURRENT STATUS OF SEAWEED RESOURCES IN INDIA
FIG: ALGINATE PRODUCTION IN INDIA

9. FIG: INDIAN RESOURCES AND SCENARIO
FIG: CURRENT STATUS OF SEAWEED RESOURCES IN INDIA
FIG: ALGINATE PRODUCTION IN INDIA

10. FIG: INDIAN RESOURCES AND SCENARIO
FIG: CURRENT STATUS OF SEAWEED
RESOURCES IN INDIA
FIG: ALGINATE PRODUCTION IN INDIA

11. IMPORTANCE OF SEAWEED
INDIA’S SEAWEED SQUADS BOOST WOMEN’S INCOMES AND CONFIDENCE

12. 1. Seaweed as Food:
 Edible seaweed, or sea vegetables, are seaweeds that can be eaten and used
in the preparation of food
 Seaweeds are also hervested or cultivated for the extraction of
polysaccharides such as alginate, agar and carrageen, gelatinous substances
collectively known as hydrocolloids or phycocolloids
2. Seaweed as Beauty Enhancer:
 Seaweeds is full of humectants that draw in moisture from the
environment, and vitamin E, also great for hydrating the skin.
 The extracts of seaweed are popular ingredients for many beauty
products like cleansers, moisturizers, anti-aging products, scrubs.
“Those with dry, sensitive, and acne-prone skin as well as those
looking for anti-aging properties will benefit from seaweeds.
3. Seaweeds for Controlling Heart Disease and Stroke
 Healthy diet, regular physical activity, and not using tobacco
products are the keys to prevention. Checking and controlling risk
factors for heart disease and stroke such as high blood pressure,
high cholesterol and high blood sugar or diabetes is also very
important.

13. 5. Anti-inflammatory Property of Seaweed:
 Methanol extracts of the seaweeds Undaria pinnatifida and Ulva linza
have a better inflammatory activity while tested against mouse ear
edema and erythema. Edema was strongly dormant by the seaweeds
Undaria pinnatifida and Ulva linza. These two seaweeds also showed
the greatest suppression of erythema.
6. Seaweeds as Anti-cancer agents:
 Seaweed has been shown to have several biological activities,
including anticancer activity.
 It also describes various compounds extracted from a range
of seaweeds that have been shown to eradicate or slow the
progression of cancer.
4. Antimicrobial and Antifungal Activity of Seaweed:
 The methanol crude extracts of Gracilaria corticate having good
usefulness against the antimicrobial and antifungal activities.
 The Gracilaria corticata, Sargassum wightii and Turbinaria arnate also
have a good source of antimicrobial agent.