New Larvicide: Plant-based solution may tackle mosquitoes

ZSI has teamed up with a Kolkata-based company, Bio Guard Eco Solutions, to manufacture the product and market it.
By Joydeep Thakur | Hindustan Times, Kolkata, Kolkata
UPDATED ON NOV 26, 2019 02:55 AM IST

Scientists from the Zoological Survey of India (ZSI) have developed a plant-based mosquito larvicide, claimed to be the first-of-its-kind in the country and it will help control the menace of mosquito-borne diseases such as dengue, malaria and chikunguniya, among others, researchers said on Monday.

“This is probably the first mosquito larvicide that has been developed from plant-based products. It will help minimize the synthetic and chemical insecticides in mosquito control. It is totally safe for humans and the environment, as it is a 100% plant extract-based product,” said Kailash Chandra, director of ZSI, India’s apex organisation on animal taxonomy under the Union ministry of environment and forest.

The product has been developed from oils from two plants: eucalyptus and pine. It took scientists nearly one and half years to develop the formula, he said.

ZSI has teamed up with a Kolkata-based company, Bio Guard Eco Solutions, to manufacture the product and market it. The team has already applied for a patent for the product. The product costs R1,260 per litre, excluding Goods and Services Tax. One litre can be diluted up to 20 times with water.

“Earlier plant-based products, such as those derived from Neem, were primarily mosquito repellents. They don’t kill larvae. All larvicides available in the market are chemical-based. This product, which has been invented with technical knowhow of ZSI scientists, will not just kill the larvae but also help repel mosquitoes when sprayed,” said MG Dalmia, CEO of the Kolkata-based firm.

DS Suman, a scientist with ZSI who led the team, said, “We have tested this in both laboratory and field. It has been able to kill almost 100% of the larvae. The larval growth is inhibited, thereby killing it.”

Civic bodies in India at present use chemical insecticides such as BTI (Bacillus thuringiensis serotype israelensis), diflubenzuron and temephose, among others, to control mosquito population.

“Even though researchers had earlier stated that some plant-based products have the potential to be developed as mosquito larvicides, none is available in the market till date. We use chemicals. If any new larvicide is introduced, we would need a go ahead from the National Vector Borne Disease Control Programme [which functions under the Union government] before using it,” said Debasish Biswas, chief vector control officer of the Kolkata Municipal Corporation.

It will take some time before civic bodies in India can start using the product as they would require the final go-ahead from the Union ministry of health and family welfare.

“For any such insecticide or larvicide to be used in vector-borne disease control programme, it first has to go to the technical advisory committee under the ministry of health and family welfare. Several field trials are conducted; after which it is referred to the central insecticide board. The final approval comes from the ministry of health and family welfare,” said a senior officer with the South Delhi Municipal Corporation (SDMC), who did not want to be named.

SHARE THIS ARTICLE ON
Close
Subhas Dutta said political parties have also been urged to curb decibel levels in roadshows and rallies, and not use loudspeakers without sound limiters.(HT File Photo)
Subhas Dutta said political parties have also been urged to curb decibel levels in roadshows and rallies, and not use loudspeakers without sound limiters.(HT File Photo)

WB activists urge parties to follow environmental norms during campaigns

PTI, Kolkata
PUBLISHED ON FEB 27, 2021 07:47 PM IST
Activist Subhas Dutta said that letters were sent to 13 political parties in the state on February 22 about the urgent need to follow such norms, including the ones on sound pollution.
Close
Sundari tree (Heritiera fomes) forest in Sunderbans river delta. The Sundarbans mangrove forest, one of the largest such forests in the world and it is an Unesco World Heritage Site.(Getty Images/iStockphoto)
Sundari tree (Heritiera fomes) forest in Sunderbans river delta. The Sundarbans mangrove forest, one of the largest such forests in the world and it is an Unesco World Heritage Site.(Getty Images/iStockphoto)

NHRC asks WB chief secretary to ensure human rights in Sundarbans

ANI
PUBLISHED ON FEB 27, 2021 06:31 PM IST
The NHRC has been passing a series of directions adjudicating the petition and rejoinder filed by the Supreme Court lawyer and noted human rights activist, Radhakanta Tripathy.
Close
Image grab from the video tweeted Amit Malviya, BJP’s IT cell head.(Twitter)
Image grab from the video tweeted Amit Malviya, BJP’s IT cell head.(Twitter)

BJP’s ‘Lokkho Sonar Bangla’ vehicles attacked after ECI declares poll schedule

By HT Correspondent, Kolkata
UPDATED ON FEB 27, 2021 05:36 PM IST
  • The BJP lodged a complaint in the Phoolbagan police station. Senior BJP leaders of the state rushed to the spot to take stock of the situation.
Close
The schedule was announced in the backdrop assertions by chief minister Mamata Banerjee that the political battle between her TMC and the BJP was a personal battle as well.(HT_PRINT)
The schedule was announced in the backdrop assertions by chief minister Mamata Banerjee that the political battle between her TMC and the BJP was a personal battle as well.(HT_PRINT)

TMC tries to hold fort as BJP aims to gain ground

By Tanmay Chatterjee, Kolkata
UPDATED ON FEB 27, 2021 01:47 AM IST
On Friday, the Election Commission announced dates for the assembly elections in West Bengal, where the BJP is determined to win power. Polls in the state will be held in eight phases from March 27 to April 29.
Close
File photo: West Bengal chief minister Mamata Banerjee. (ANI Photo)
File photo: West Bengal chief minister Mamata Banerjee. (ANI Photo)

TMC cries foul on Bengal poll announcement, others are 'happy and prepared'

By HT Correspondent, Kolkata
UPDATED ON FEB 27, 2021 12:12 AM IST
  • The TMC asked the EC why the polls could not be held in fewer phases.
Close
West Bengal chief minister Mamata Banerjee. (HT_PRINT)
West Bengal chief minister Mamata Banerjee. (HT_PRINT)

Mamata Banerjee questions rationale behind conducting Bengal polls in 8 phases

By HT Correspondent, Kolkata
UPDATED ON FEB 26, 2021 10:23 PM IST
  • She alleged that the poll panel scheduled the election dates keeping in mind the BJP’s demands.
Close
A CBI team arrives at the residence of West Bengal CM Mamata Banerjee's nephew and MP Abhishek Banerjee, in Kolkata on Tuesday.(ANI Photo)
A CBI team arrives at the residence of West Bengal CM Mamata Banerjee's nephew and MP Abhishek Banerjee, in Kolkata on Tuesday.(ANI Photo)

CBI, ED raid Kolkata businessmen, others in coal smuggling scam

By HT Correspondent | Edited by Abhinav Sahay, Kolkata
PUBLISHED ON FEB 26, 2021 12:09 PM IST
  • The CBI earlier questioned Bengal chief minister Mamata Banerjee’s nephew and Trinamool Congress (TMC) MP Abhishek Banerjee’s wife Rujira Banerjee in the case.
Close
Visitors at Alipore Zoological Garden in Kolkata. (PTI)
Visitors at Alipore Zoological Garden in Kolkata. (PTI)

West Bengal: Three exotic birds stolen from Kolkata zoo

By HT Correspondent | Edited by Zara Khan
UPDATED ON FEB 26, 2021 10:22 AM IST
Preliminary investigations revealed that the miscreants had used a bird-catcher made of a stick and cloth to catch the birds. They then used a 15-foot-tall ladder kept in the zoo to climb the boundary wall and flee
Close
File photo: Uttar Pradesh Chief Minister Yogi Adityanath.(ANI)
File photo: Uttar Pradesh Chief Minister Yogi Adityanath.(ANI)

Yogi Adityanath to visit Malda next week to boost BJP’s Bengal prospects

By Manish Chandra Pandey, Lucknow
UPDATED ON FEB 26, 2021 12:06 AM IST
  • Besides rallies, the chief minister’s itinerary could include religious stopovers at important places of worship.
Close
CM Mamata Banerjee on her way to her office on an electric scooter on Thursday. (Samir Jana/HT photo)
CM Mamata Banerjee on her way to her office on an electric scooter on Thursday. (Samir Jana/HT photo)

Mamata Banerjee rides electric scooter to protest against rising fuel prices

By HT Correspondent | Edited by Smriti Sinha
UPDATED ON FEB 25, 2021 02:15 PM IST
Minister Firhad Hakim rode the scooter, ferrying the chief minister from her residence in south Kolkata to the secretariat in Howrah. She said she would use the electric scooter for her ride back home as well
Close
West Bengal Chief Minister Mamata Banerjee.(ANI)
West Bengal Chief Minister Mamata Banerjee.(ANI)

CM Mamata Banerjee takes a scooter to Nabanna protesting against fuel prices

By hindustantimes.com | Edited by Shivani
PUBLISHED ON FEB 25, 2021 01:21 PM IST
  • "Modi government only makes false promises, has done nothing to bring down fuel prices," PTI quoted the Bengal chief minister as saying.
Close
West Bengal’s deputy labour minister Zakir Hossain(HT Photo)
West Bengal’s deputy labour minister Zakir Hossain(HT Photo)

Bomb attack on Bengal minister: CID detains Bangladeshi national

PTI, Kolkata
UPDATED ON FEB 24, 2021 01:21 PM IST
Hossain, Trinamool Congress MLA and the minister of state for labour, was waiting at platform number 2 to catch a train to Kolkata around 10 pm on February 17 when the blast occurred, seriously injuring him and the others.
Close
The CBI had on Sunday visited the residence of Abhishek Banerjee to serve notice to his wife for questioning. (AP PHOTO).
The CBI had on Sunday visited the residence of Abhishek Banerjee to serve notice to his wife for questioning. (AP PHOTO).

CBI team questions TMC MP’s wife

By HT Correspondent, Kolkata
UPDATED ON FEB 24, 2021 04:09 AM IST
On Tuesday, chief minister Mamata Banerjee, who happens to be the aunt of Abhishek Banerjee, visited his house.
Close
CBI team at the residence of West Bengal CM Mamata Banerjee's nephew and MP Abhishek Banerjee in Kolkata.(ANI Photo)
CBI team at the residence of West Bengal CM Mamata Banerjee's nephew and MP Abhishek Banerjee in Kolkata.(ANI Photo)

CBI sleuths question TMC MP Abhishek Banerjee’s wife in coal scam case

By HT Correspondent, Kolkata
UPDATED ON FEB 23, 2021 11:24 PM IST
  • According to CBI officials privy to the development, Rujira was questioned for around an hour.
Close
BJP leader was named by his party colleague in a drugs case
BJP leader was named by his party colleague in a drugs case

BJP's Rakesh Singh, named by Pamela Goswami in drugs case, arrested in Kolkata

Written by Prashasti Singh, Hindustan Times, New Delhi
UPDATED ON FEB 23, 2021 10:10 PM IST
BJP leader Goswami, who was also arrested in the case on Friday along with her friend Prabeer Kumar Dey and her security guard after 90 gm of cocaine was allegedly found in her possession, had time and again named Singh in the case.
Close
SHARE
Story Saved
OPEN APP