Neera manufactured by the Kollam Kaipuzha Plant in 2016 | |
| Ingredients | toddy palm |
|---|---|
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Neera, also calledpalm nectar, is a sap extracted from theinflorescence of various species oftoddy palms and used as a drink.[1] Neera extraction is generally performed before sunrise. It is sweet,translucent in colour. It is susceptible to naturalfermentation at ambient temperature within a few hours of extraction, and is also known as palm wine. Once fermented, Neera becomestoddy. Neera is widely consumed inIndia,Sri Lanka,Africa,Malaysia,Indonesia,Thailand, andMyanmar. 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 thecoconut,sago, andPalmyra (Borassus flabellifer L.) palm, and scraping the tendermost part, just below the crown.
In Goa though, the wordsurr is used for toddy of thecoconut palm, andnirau for the sweet juice extracted last from thecashew apple. The words are not interchangeable.
Neera is rich in carbohydrates, mildly alcoholic, mostly sucrose, and has a nearly neutralpH.[2] It has aspecific 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:[3]
| Substance | Concentration (g/100 mL) |
|---|---|
| Sucrose | 12.3 – 17.4 |
| Total ash | 0.11 – 0.41 |
| Protein | 0.23 – 0.32 |
| Ascorbic acid | 0.016 – 0.030 |
| Total solids | 15.2 – 19.7 |
Neera is highly susceptible to naturalfermentation at ambient temperature within a few hours of extraction from the palm source. Once fermented, it transforms intotoddy 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 aspasteurization are used.[3]
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.[4]
A special filtration technique to enhance the shelf life of neera was developed by theNational Chemical Laboratory inPune,India.[5] Technologies for the preservation and processing of neera were also developed by theCentral Food Technological Research Institute inMysore,India.[6]
Palmgur (jaggery),palm sugar, coconut nectar andneera syrup are produced by heating fresh neera and concentrating it.Caramelization[citation needed] turns the heated neera from milky white to transparent brown.
West Bengal andOrissa are the Indian states where most of the neera is converted into palmgur. Palmgur is also produced from neera in the states ofGujarat andMaharashtra.