By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market program in Las Vegas luxury jets are tempting purchasers with their streamlined silhouettes, luxurious cabins - and significantly, their usage of alternative fuels.

Fuel producers and jetmakers are keen to showcase unique 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 airlines, have bowed to ecological pressure on aviation and committed to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that adopting eco-friendly fuel to curb emissions could make organization jets more appealing to environmentally conscious buyers - especially corporations facing concerns over sustainability from investors or green project groups.

The availability of less polluting personal jets could also spare the rich and well-known the unfavorable publicity experienced by Britain's Prince Harry and his partner Meghan over a current private jet journey to southern France.

Five Gulfstream jets on display 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 by-products of the food industry," stated Bryan Sherbacow, chief business officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions internationally, however can emit, on average, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based company Victor.

Prince Harry has actually protected his periodic use of private jets to ensure his household's safety, and has stated that on the unusual celebrations he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his schedule have actually added fresh obstacles for a market already striving to justify its contribution to cutting business expenses.

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

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

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

Environmentalists and some experts remain skeptical that biojetfuels, usually blended 50-50 with kerosene, will make a significant impact on public perceptions about high-end travel.

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

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

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

Corporate charter companies and consultants are likewise seeing more interest from customers who desire to buy carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions played a role in a corporate jet usage research study his company recently completed 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) chauffeur. But I think individuals are becoming more knowledgeable about the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)