By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest market show in Las Vegas luxury jets are enticing buyers with their sleek shapes, plush cabins - and progressively, their usage of alternative fuels.

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

Business jet operators, like airlines, have actually bowed to environmental pressure on air travel and devoted to halving carbon emissions by 2050 compared with 2005.

Their hope is that adopting renewable fuel to curb emissions could make service jets more attractive to environmentally conscious buyers - specifically corporations dealing with questions over sustainability from shareholders or green campaign groups.

The schedule of less polluting private jets could likewise spare the abundant and well-known the unfavorable publicity experienced by Britain's Prince Harry and his partner Meghan over a current personal jet journey to southern France.

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

The latest waste-based fuels consist of "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, primary commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions internationally, but can release, on average, approximately 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 occasional use of private 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 say occurrences such as the furore over his schedule have included fresh difficulties for a market currently aiming to validate its contribution to cutting business costs.

"Incidents of flight shaming including making use of personal jets are unfortunate when you consider that our market has provided fuel effectiveness enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

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

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

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

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

Demand from service jet operators for sustainable 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 broaden production up to 150 million gallons by 2022.

Corporate charter business and experts are also seeing more interest from customers who wish to buy carbon credits to balance out emissions from their flights.

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

"At the end of the day, I think that price, cost per hour, range, 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)