By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas high-end jets are drawing buyers with their streamlined shapes, plush cabins - and increasingly, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to showcase novel kinds of aviation fuel deemed less hazardous to the climate, from used cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airline companies, have actually bowed to environmental pressure on air travel and committed to halving carbon emissions by 2050 compared with 2005.

Their hope is that embracing sustainable fuel to curb emissions might make business jets more attractive to ecologically conscious buyers - especially corporations facing questions over sustainability from investors or green campaign groups.

The accessibility of less polluting private jets might likewise spare the rich and famous the negative promotion experienced by Britain's Prince Harry and his wife Meghan over a recent personal jet trip to southern France.

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

The current waste-based fuels consist of "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, primary industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

Some of the other 79 aircraft on display screen are anticipated to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions globally, however can discharge, typically, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter .

Prince Harry has actually protected his occasional usage of private jets to ensure his family's security, and has actually stated that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his itinerary have added fresh challenges for a market currently aiming to justify its contribution to cutting business expenses.

"Incidents of flight shaming including making use of private jets are regrettable when you think about that our industry has actually provided fuel effectiveness enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel use will help the industry make inroads with corporations and wealthy purchasers. According to industry data, billionaires just have a 19% organization jet ownership rate.

But even an image makeover - with jets sporting sticker labels like "this aircraft flies on eco-friendly fuels" and organisers including alternative fuel pumps for visiting airplanes - is not likely to satisfy all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some experts remain hesitant that biojetfuels, typically blended 50-50 with kerosene, will make a considerable effect on public perceptions about high-end travel.

"No quantity of Jatropha or Brazil-nut fuel can make service jets look eco-friendly," said aviation analyst Richard Aboulafia.

Demand from business jet operators for eco-friendly fuels now far goes beyond supply and their interest might drive future production, Sherbacow stated.

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

Corporate charter business and specialists are also seeing more interest from customers who wish to purchase carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions played a function in a business jet utilization research study his company recently finished for a Fortune 500 business.

"At the end of the day, I believe that rate, expense per hour, variety, speed and performance, that's still the (sales) motorist. But I believe people 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)