By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market program in Las Vegas high-end jets are luring purchasers with their streamlined shapes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel producers and jetmakers are eager to display novel kinds of aviation fuel considered less damaging to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

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

Their hope is that adopting eco-friendly fuel to curb emissions might make organization jets more appealing to environmentally mindful purchasers - specifically corporations facing questions over sustainability from shareholders or green project groups.

The availability of less contaminating private jets could also spare the abundant and famous the unfavorable promotion experienced by Britain's Prince Harry and his partner Meghan over a recent private jet trip to southern France.

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

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

"All of our product is inedible."

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

FLIGHT SHAMING

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

Prince Harry has actually protected his occasional use of personal jets to ensure his household's security, and has actually said that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his schedule have included fresh difficulties for an industry already striving to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming involving using private jets are unfortunate when you think about that our industry has actually provided fuel effectiveness enhancements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting sticker labels like "this airplane flies on sustainable fuels" and organisers adding alternative fuel pumps for visiting planes - is not likely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts remain hesitant that biojetfuels, typically combined 50-50 with kerosene, will make a considerable effect on public perceptions about luxury travel.

"No amount of jatropha curcas or Brazil-nut fuel can make organization jets look eco-friendly," said air travel expert Richard Aboulafia.

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

World Energy, which produces 40 million gallons of biofuel at its California plant, could broaden production as much as 150 million gallons by 2022.

Corporate charter companies and experts are also seeing more interest from clients who want to buy carbon credits to balance out emissions from their .

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions contributed in a business jet usage research study his company just recently completed for a Fortune 500 business.

"At the end of the day, I think that price, expense per hour, variety, speed and performance, that's still the (sales) driver. But I think individuals are ending up being more aware of the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)