By Allison Lampert

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

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

Business jet operators, like airlines, have actually bowed to ecological pressure on aviation and committed to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that embracing renewable fuel to suppress emissions could make service jets more attractive to ecologically conscious buyers - specifically corporations dealing with questions over sustainability from investors or green project groups.

The schedule of less polluting private jets could likewise spare the rich and popular the negative publicity experienced by Britain's Prince Harry and his partner Meghan over a recent private jet trip to southern France.

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

The most recent waste-based fuels include "fats, grease and oils that are byproducts of the food market," said Bryan Sherbacow, primary commercial 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 aircraft on display are expected to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions globally, however 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 actually protected his occasional use of private jets to guarantee his household's safety, and has actually stated that on the rare events he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his itinerary have added fresh obstacles for a market currently aiming to justify its contribution to cutting corporate costs.

"Incidents of flight shaming involving making use of personal jets are unfortunate when you consider that our industry has delivered fuel effectiveness enhancements of 40% over the past 40 years," said Bombardier Aviation 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% service jet ownership rate.

But even an image transformation - with jets sporting sticker labels like "this airplane flies on renewable fuels" and organisers including alternative fuel pumps for checking out airplanes - is unlikely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts stay skeptical that biojetfuels, generally blended 50-50 with kerosene, will make a significant effect on public perceptions about luxury travel.

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

Demand from organization jet operators for renewable fuels now far exceeds supply and their interest could drive future production, said.

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

Corporate charter companies and experts are also seeing more interest from customers who desire to purchase carbon credits to offset emissions from their flights.

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

"At the end of the day, I think that rate, expense per hour, range, speed and performance, that's still the (sales) motorist. But I believe individuals are becoming more knowledgeable about the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)