By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas high-end jets are enticing purchasers with their sleek silhouettes, plush cabins - and progressively, their use of alternative fuels.

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

Business jet operators, like airline companies, 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 curb emissions might make business jets more appealing to environmentally conscious purchasers - particularly corporations facing concerns over sustainability from investors or green campaign groups.

The availability of less polluting personal jets might also spare the abundant and famous the unfavorable 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 using California-produced fuel from inedible beef tallow.

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

"All of our item is inedible."

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

FLIGHT SHAMING

represent less than 0.1% of total annual carbon emissions worldwide, but can give off, on average, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

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

But planemakers state events such as the furore over his itinerary have actually added fresh obstacles for an industry already striving to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming involving making use of private jets are regrettable when you think about that our industry has actually delivered fuel efficiency enhancements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image remodeling - with jets sporting sticker labels like "this aircraft flies on sustainable fuels" and organisers adding alternative fuel pumps for going to aircrafts - is unlikely to please all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some experts stay skeptical that biojetfuels, normally combined 50-50 with kerosene, will make a considerable effect on public understandings about high-end travel.

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

Demand from service jet operators for sustainable fuels now far exceeds 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 up to 150 million gallons by 2022.

Corporate charter companies and specialists are likewise seeing more interest from consumers who wish to purchase carbon credits to balance out emissions from their flights.

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

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