By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market show in Las Vegas luxury jets are drawing buyers with their smooth shapes, plush cabins - and significantly, their use of alternative fuels.

Fuel producers and jetmakers are eager to display novel kinds of air travel fuel considered less damaging to the environment, from used cooking oil to the clearly less glamorous meat waste.

Business jet operators, like airline companies, have bowed to ecological pressure on air travel and dedicated to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that embracing sustainable fuel to suppress emissions might make organization jets more attractive to ecologically conscious purchasers - specifically corporations dealing with questions over sustainability from shareholders or green campaign groups.

The accessibility of less contaminating private jets might also spare the abundant and popular the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a recent private jet journey 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, primary commercial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

A few of the other 79 aircraft on display are anticipated to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions worldwide, but can release, typically, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has safeguarded his periodic use of personal jets to ensure his family's safety, and has said that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his schedule have actually included fresh challenges for a market currently striving to justify its contribution to cutting business costs.

"Incidents of flight shaming including using personal jets are regrettable when you consider that our market has provided fuel performance improvements of 40% over the past 40 years," said President David Coleal.

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

But even an image remodeling - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers adding alternative fuel pumps for going to planes - is not likely to please all critics at the Oct 22-24 high-end jet event.

Environmentalists and some analysts remain doubtful that biojetfuels, generally blended 50-50 with kerosene, will make a substantial effect on public perceptions about high-end travel.

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

Demand from organization jet operators for eco-friendly 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, might expand production up to 150 million gallons by 2022.

Corporate charter business and specialists are also 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, said emissions played a role in a business jet usage research study his business recently finished for a Fortune 500 company.

"At the end of the day, I believe that rate, cost per hour, variety, speed and efficiency, that's still the (sales) chauffeur. But I think 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)