By Allison Lampert

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

Fuel producers and jetmakers are eager to display unique forms of aviation fuel considered less harmful to the climate, from used cooking oil to the noticeably less glamorous meat waste.

Business jet operators, like airlines, have bowed to environmental pressure on air travel and committed to cutting in half carbon emissions by 2050 compared to 2005.

Their hope is that embracing sustainable fuel to suppress emissions might make service jets more appealing to ecologically conscious buyers - particularly corporations dealing with questions over sustainability from investors or green campaign groups.

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

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

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

"All of our product is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions globally, however can produce, typically, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has defended his occasional use of personal jets to guarantee his household's safety, and has stated that on the rare events he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his schedule have included fresh obstacles for an industry already making every effort to justify its contribution to cutting corporate expenses.

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

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

But even an image remodeling - with jets sporting stickers like "this aircraft flies on renewable fuels" and organisers adding alternative fuel pumps for visiting aircrafts - is unlikely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts stay doubtful that biojetfuels, typically mixed 50-50 with kerosene, will make a substantial impact on public perceptions about high-end travel.

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

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

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 business and experts are also seeing more interest from clients who desire to purchase carbon credits to balance out emissions from their flights.

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

"At the end of the day, I think that price, cost per hour, variety, speed and efficiency, that's still the (sales) chauffeur. But I believe individuals are becoming more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)