By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest show in Las Vegas high-end jets are luring purchasers with their smooth silhouettes, plush cabins - and significantly, their use of alternative fuels.

Fuel producers and jetmakers are keen to display unique types of aviation fuel considered less harmful to the environment, from utilized cooking oil to the definitely less attractive meat waste.

Business jet operators, like airline companies, have actually acquiesced ecological pressure on air travel and dedicated to halving carbon emissions by 2050 compared to 2005.

Their hope is that adopting renewable fuel to curb emissions might make company jets more appealing to ecologically mindful buyers - especially corporations dealing with questions over sustainability from investors or green campaign groups.

The schedule of less contaminating private jets could likewise spare the rich and popular the unfavorable promotion experienced by Britain's Prince Harry and his wife Meghan over a current personal jet trip to southern France.

Five Gulfstream jets on display screen in Las Vegas are utilizing California-produced fuel from inedible beef tallow.

The current waste-based fuels consist of "fats, grease and oils that are byproducts of the food market," stated Bryan Sherbacow, chief commercial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

A few of the other 79 airplane on screen are expected to be powered by 150,000 gallons of other eco-friendly fuel blends expected to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions worldwide, but can emit, usually, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually safeguarded his periodic use of private jets to guarantee his household's security, and has actually said that on the uncommon celebrations he does not fly commercially he offsets his emissions.

But planemakers say occurrences such as the furore over his travel plan have added fresh obstacles for an industry already striving to validate its contribution to cutting business costs.

"Incidents of flight shaming including the use of personal jets are unfortunate when you consider that our market has provided fuel performance improvements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel usage will help the industry make inroads with corporations and rich buyers. According to market information, billionaires only have a 19% business jet ownership rate.

But even an image remodeling - with jets sporting stickers like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for going to airplanes - is not likely to please all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts remain doubtful that biojetfuels, generally blended 50-50 with kerosene, will make a considerable effect on public understandings about luxury travel.

"No quantity of jatropha curcas or Brazil-nut fuel can make business jets look eco-friendly," said air travel analyst Richard Aboulafia.

Demand from business jet operators for renewable fuels now far surpasses supply and their interest might drive future production, Sherbacow said.

World Energy, which produces 40 million gallons of biofuel at its California plant, might broaden production up to 150 million gallons by 2022.

Corporate charter business and experts are likewise seeing more interest from clients who wish to purchase carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions played a role in a business jet usage study his company recently completed for a Fortune 500 business.

"At the end of the day, I believe that cost, expense per hour, range, speed and performance, that's still the (sales) motorist. But I believe individuals are ending up being more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)