By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest market program in Las Vegas high-end jets are tempting buyers with their sleek silhouettes, plush cabins - and progressively, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to showcase unique types of air travel fuel considered less harmful to the environment, from utilized cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airline companies, have acquiesced ecological pressure on aviation and committed to halving carbon emissions by 2050 compared to 2005.

Their hope is that embracing sustainable fuel to suppress emissions might make company jets more attractive to environmentally conscious purchasers - especially corporations facing concerns over sustainability from investors or green project groups.

The schedule of less polluting personal jets could likewise spare the abundant and famous the unfavorable publicity experienced by Britain's Prince Harry and his partner Meghan over a recent personal jet trip to southern France.

Five Gulfstream jets on display screen in Las Vegas are utilizing 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 industry," stated Bryan Sherbacow, chief industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

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

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

But planemakers say occurrences such as the furore over his travel plan have added fresh obstacles for a market already striving to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming involving the usage of personal jets are regrettable when you think about that our industry has actually delivered fuel effectiveness enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

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

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

Environmentalists and some analysts remain skeptical that biojetfuels, typically combined 50-50 with kerosene, will make a considerable influence on public understandings about high-end travel.

"No amount of Jatropha or Brazil-nut fuel can make company jets look eco-friendly," stated air travel analyst Richard Aboulafia.

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

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

Corporate charter companies and specialists are likewise seeing more interest from customers who wish to buy carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said 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 believe that rate, expense per hour, range, speed and efficiency, that's still the (sales) motorist. But I think individuals are becoming more mindful of the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)