By Allison Lampert

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

Fuel producers and jetmakers are keen to display unique types of air travel fuel deemed less damaging to the environment, from used cooking oil to the distinctly less attractive meat waste.

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

Their hope is that adopting sustainable fuel to suppress emissions could make company jets more attractive to ecologically conscious purchasers - particularly corporations dealing with questions over sustainability from shareholders or green project groups.

The availability of less contaminating private jets could also spare the rich and famous the negative promotion experienced by Britain's Prince Harry and his wife Meghan over a current personal jet journey to southern France.

Five Gulfstream jets on display 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 byproducts of the food market," stated Bryan Sherbacow, chief business officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions worldwide, however can give off, usually, up to 20 times more carbon emissions per traveler 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 family's security, and has actually stated that on the rare occasions he does not fly commercially he offsets his emissions.

But planemakers say events such as the furore over his travel plan have added fresh obstacles for an industry already making every effort to validate its contribution to cutting business expenses.

"Incidents of flight shaming including making use of private jets are regrettable when you consider that our market has actually delivered fuel performance enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting sticker labels like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for checking out aircrafts - is not likely to satisfy all critics at the Oct 22-24 high-end jet event.

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

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

Demand from company jet operators for sustainable fuels now far exceeds supply and their interest might drive future production, Sherbacow stated.

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

Corporate charter business and consultants are also seeing more interest from clients 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 contributed in a business jet usage study his business recently completed for a Fortune 500 company.

"At the end of the day, I think that price, cost per hour, range, speed and performance, that's still the (sales) motorist. But I believe individuals are becoming more familiar with the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)