Neera

Key takeaways

Neera belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Neera to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Neera from memory before moving on to harder problems.

Reference excerpt

Neera, also called palm nectar, is a sap extracted from the inflorescence of various species of toddy palms and used as a drink. Neera extraction is generally performed before sunrise. It is sweet, translucent in colour. It is susceptible to natural fermentation at ambient temperature within a few hours of extraction, and is also known as palm wine. Once fermented, Neera becomes toddy. Neera is widely consumed in India, Sri Lanka, Africa, Malaysia, Indonesia, Thailand, and Myanmar. Neera is not the juice made from palm fruit. Neera requires neither mechanical crushing, as in the case of sugarcane, nor leaching, like beet-root; it is obtained by slicing the spathes of the coconut, sago, and Palmyra (Borassus flabellifer L.) palm, and scraping the tendermost part, just below the crown. In Goa though, the word surr is used for toddy of the coconut palm, and nirau for the sweet juice extracted last from the cashew apple. The words are not interchangeable.

Composition Neera is rich in carbohydrates, mildly alcoholic, mostly sucrose, and has a nearly neutral pH. It has a specific gravity ranging from 1.058 to 1.077. The chemical percentage composition of neera varies, depending on such factors as place, type of palm, mode and season of collection. Typical values are:

Fermentation Neera is highly susceptible to natural fermentation at ambient temperature within a few hours of extraction from the palm source. Once fermented, it transforms into toddy with 4% alcohol. Using several technologies developed by various research institutes, neera is processed and preserved in its natural form to retain the vitamins, sugar, and other nutrients beneficial for health. To extend the shelf life of neera, heat preservation techniques such as pasteurization are used. A team of experts from SCMS Institute of BioSciences and Biotechnology, Cochin, India have successfully developed filtration and preservation techniques for neera and collaborated with Coconut Development Board to commercialize the drink among the public. A special filtration technique to enhance the shelf life of neera was developed by the National Chemical Laboratory in Pune, India. Technologies for the preservation and processing of neera were also developed by the Central Food Technological Research Institute in Mysore, India.

By-products Palmgur (jaggery), palm sugar, coconut nectar and neera syrup are produced by heating fresh neera and concentrating it. Caramelization turns the heated neera from milky white to transparent brown. West Bengal and Orissa are the Indian states where most of the neera is converted into palmgur. Palmgur is also produced from neera in the states of Gujarat and Maharashtra.

In India

In Gujarat, Neera-producing societies have formed the Federation of Gujarat Neera And Tadpadarth Gramodyog Sangh. This organisation has set up a filtration plant that processes Neera to increase its shelf life. The Gujarat Neera and Tadpadarth Gramodyog Sangh, established in 1991, aims to improve living conditions of the workers engaged in the production of Neera. It is also trying to increase the production of neera in the state by planting more palm trees, and investing in the training of tapper-workers. In Andhra Pradesh, unlike other states, there is no state government sponsorship/support to promote neera or its by-products at retail outlets. Only the Khadi and Village Industries Commission (KVIC) promotes neera as a health drink. In Gujarat and Maharashtra, neera is made available through various outlets known as "Neera Vikri Kendra" (Neera sale centre). The Neera Palm Product Cooperative Society had set up small green kiosks that sold neera in major railway stations, but they are now only to be found alongside highways and expressways outside the Mumbai city area. In the above two states the neera is extracted from date palm and pulmyrah trees. In the state of Karnataka, where there are abundant coconut trees, neera is tapped from coconut trees . In Karnataka, neera is extracted and sold by the Ediga and Billava castes. The state government constituted the Neera Board, comprising farmers, provincial government officials, and neera training institutes, to inspect and control the quality of neera and its products, give approvals to labels, and develop various schemes for selling in the international market. The Central Food Technological Research Institute developed a technology to preserve neera for two months, and the government plans to promote neera as an energy drink with medicinal value, packaged in sachets and bottles. In Kerala, the state government, as part of Kerala Vision 2010, set up three units to manufacture neera. In Odisha, the state government established a cooperative organisation known as the Odisha State Palmgur Cooperative Federation to provide technological support in the processing and production of neera and its associated by-products such as jaggery and candy. In Tamil Nadu, Neera is also called "Padaneer" in Tamil. KVIC and Tamil Nadu Palm Products Development Board sell refrigerated Padaneer at their outlets. Neera syrup is used as a drink in Ayurveda.

Illustrations

Worked examples

Example 1 — a first encounter with Neera

Start with the simplest possible case. Write down what Neera claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Neera before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Neera ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Neera

In research: Neera appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Neera in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Neera is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fermented drinks, Indian alcoholic beverages, Non-alcoholic drinks, so understanding it makes those chapters shorter.
In everyday life: Look for Neera outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Neera in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Neera means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Neera out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Neera in simple terms?

Neera, also called palm nectar, is a sap extracted from the inflorescence of various species of toddy palms and used as a drink. Neera extraction is generally performed before sunrise.

Why does Neera matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Neera?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Neera.