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By Allison Lampert

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

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

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

Their hope is that adopting sustainable fuel to curb emissions might make company jets more attractive to environmentally mindful buyers - particularly corporations facing concerns over sustainability from shareholders or green campaign groups.

The accessibility of less contaminating private jets could likewise spare the rich and popular the unfavorable publicity experienced by Britain's Prince Harry and his better half 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 current waste-based fuels include "fats, grease and oils that are byproducts of the food market," stated Bryan Sherbacow, primary commercial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

A few of the other 79 airplane on screen are anticipated to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions internationally, however can discharge, on average, 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 defended his occasional usage of private jets to ensure his household's security, and has stated that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his itinerary have included fresh obstacles for an industry currently aiming to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming including the usage of private jets are unfortunate when you think about that our industry has actually provided fuel performance enhancements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers adding 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 experts remain hesitant that biojetfuels, normally mixed 50-50 with kerosene, will make a significant impact on public understandings about luxury travel.

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

Demand from organization jet operators for renewable 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, might expand production approximately 150 million gallons by 2022.

Corporate charter companies and experts are likewise seeing more interest from clients 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 contributed in a corporate jet usage study his business recently finished for a Fortune 500 business.

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