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Potentials of edible aquatic weeds in Sri Lanka

Yasoda samanmali 17 APF 3338

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What is a weed? Plants which grow out of their place interfering the utilization of natural resources. They are prolific, persistent, resistant, competitive, harmful and even poisonous in nature and can grow under adverse climatic conditions

What are aquatic weeds? Unabated plants which grow and complete their life cycle in water and cause harm to aquatic environment directly and to related eco environment relatively Essential parts of natural aquatic systems and form the basis of a water body’s health and productivity

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Aquatic weeds

There are two types of aquatic weeds 1. Algae 2. Flowering weeds They are divided into three groups: a. Emergent weeds - shore and marginal b. Floating weeds - free floating and rooted floating c. Submerged weeds - rooted and non-rooted

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Edible aquatic weeds in Sri Lanka

Aquatic weeds can provide three types of food,

foliage use as green vegetable, grain

seeds provide protein, starch, oil

fleshy swollen roots provide carbohydrates .

Some common aquatic weeds and their parts are consumed by human

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Potentials of edible aquatic weeds in Sri Lanka

Source of nutrition in rural areas Source of income supplying as foods weaving baskets or bags Supplying as medicines Supplying flowers Restore water bodies As feeds for livestock animals Raw materials for industries

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110 Lotus Flowers ideas | flowers, lotus, water lilies

Nelumbo nucifera (Lotus)

The fruits are like nuts, oblong-ovoid and brown. The fruit possess the black, hard and ovoid seeds

Lotus is perennial, rhizomatous and aquatic herb usually grows to the height of 150 cm and has a horizontal spread of 3 m.

Ornamental aquatic plant

The stems are thick which bears flowers several

The flowers are sweet scented. Petals are white to rosy and numerous

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Usage of Nelumbo nucifera

Flowers For offerings in the temples and for decorations For commercial productions Perfumes Tea Ayurvedic medicine Blocks absorption of fat that helps lower cholesterol

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Usage of Nelumbo nucifera

Seeds As a commercial food product Rich contents of B vitamins, dietary fiber, proteins and antioxidants Two types of dried lotus seeds can be found commercially; white and brown peel Ayurvedic medicine Used in the treatment of various cancer, bleeding disorders, tissue inflammation, diabetes , skin diseases and cardiovascular diseases

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Usage of Nelumbo nucifera

Use as a food wrappers Employment opportunity for villagers Ayurvedic medicine Blocks absorption of fat that helps lower cholesterol Use for the treatment of several disorders including skin disease, cough, inflammation, fever and many other disorders The leaves are used as an effective drug for hematemesis Leaves

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Usage of Nelumbo nucifera

Roots Consume as a food A fiber-rich food mainly consumed in dry season common source of food in salads, soups and sauces Supplying to the market provides a substantial employment opportunity for villagers Ayurvedic medicine For treating leukoderma , small pox, diarrhea, dysentery and cough

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Olu (Hairy Water Lily) | Hairy Water Liliy (Nymphaea pubesce… | Flickr

Nymphaea pubescens (Water lily)

Have erect perennial rhizomes or rootstocks that anchor it to the mud in the botto m

Water lily is a aquatic rhizomatous weed

They are distributed throughout the island

They are distributed throughout the island and abundant in the dry zone

Ornamental aquatic plant

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Usage of Nymphaea pubescens

For commercial productions Olu tea - Provide employment opportunity for villagers

Ayurvedic medicine Act as a blood purifier and used to treat palpitation of the heart

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Usage of Nymphaea pubescens

Seeds For commercial products Olu rice Olu seed flour (Seeds flour with wheat flour in cookies and evaluation of their organoleptic properties) Possessing antibacterial properties and highly prescribed for the diabetic patients

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Ipomoea aquatica - Wikipedia

Ipomoea aquatica ( Water spinach )

It is a popular leaf vegetable in Sri Lanka as well as other Asian countries

Water spinach is a aquatic plant belong to the morning glory family

Commonly found near the water bodies such as border of paddy fields, marsh land or close to tank in dry zone

Also cultivate commercially in populated areas

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Usage of Ipomoea aquatica

Consume as a Food Related parts are leaves and young stem Employment opportunity for villagers

Ayurvedic medicine Related parts in treatments are leaves, whole plants and buds Treatment for diabetes mellitus Ring worm infestation Fever

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Katuikiriya | Marsh Barble Tree | Hygrophila schulli | Trees in Sri Lanka

Marsh Barbel - Hygrophila auriculata - Neera Mulliya | SL Flora

Hygrophila schuli (Neeramulliya)

The plant has small leaves and very thick stems

Family name is Acanthaceae

An evergreen shrub that grows in Sri Lanka

It can be found in wet or dry zones of the low country, growing near water bodies and in marshlands

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Usage of Hygrophila schuli

As a Food Related parts are leaves and young stem Employment opportunity for villagers

Ayurvedic medicine Related parts in treatments roots, seeds and whole plant Neeramulliya ayurvedic tea Treatment for Kidney stones Hepatic diseases Gonorrhea

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Memory Booster Plant Bacopa monniera (Brahmi): Biotechnology and Molecular Aspects of Bacoside Biosynthesis | SpringerLink

Bacopa monnieri (Lunuwila)

Occurs in open marshy lands and along banks of ponds and creeks of the lowlands. Usually close to the coast Flowering throughout the year

Family name is Scrophulariaceae

Common indigenous herb with creeping stems

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Usage of Bacopa monnieri

As a Food Related parts are leaves and young stem Employment opportunity for villagers

Use to produce commercially available products Lunuwila herbal drink / powder /soaps/shampoo

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Usage of Bacopa monnieri

Related parts in treatments are stem and leaves Treatment for Insanity Epilepsy Snake bites Ayurvedic medicine