By Allison Lampert

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

Fuel producers and jetmakers are eager to showcase unique forms of aviation fuel considered less hazardous to the climate, from utilized cooking oil to the distinctly less glamorous meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions could make business jets more attractive to ecologically mindful buyers - particularly corporations dealing with concerns over sustainability from shareholders or green campaign groups.

The availability of less polluting private jets could also spare the abundant and well-known the negative publicity experienced by Britain's Prince Harry and his wife Meghan over a current personal jet trip to southern France.

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

The latest waste-based fuels include "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 item is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions internationally, but can discharge, on average, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually safeguarded his periodic use of personal jets to guarantee his family's security, and has said that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his schedule have actually included fresh difficulties for an industry already aiming to validate its contribution to cutting business costs.

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

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

But even an image makeover - with jets sporting stickers like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for checking out aircrafts - is not likely to please all critics at the Oct 22-24 high-end jet occasion.

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

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

Demand from organization jet operators for renewable fuels now far goes beyond 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 companies and consultants are likewise seeing more interest from consumers who desire 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 role in a utilization study his company just recently completed 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) motorist. But I think people 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)