By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest industry show in Las Vegas high-end jets are tempting buyers with their sleek shapes, luxurious cabins - and progressively, their use of alternative fuels.

Fuel producers and jetmakers are keen to showcase unique kinds of air travel fuel deemed less damaging to the climate, from utilized cooking oil to the definitely less attractive meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions might make business jets more appealing to environmentally conscious buyers - particularly corporations dealing with questions over sustainability from investors or green project groups.

The schedule of less polluting private jets could likewise spare the abundant and famous 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 screen 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 by-products of the food market," stated Bryan Sherbacow, primary industrial 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 screen are expected to be powered by 150,000 gallons of other sustainable fuel mixes anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions worldwide, but can discharge, on average, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter company Victor.

Prince Harry has actually protected his occasional usage of private jets to guarantee his family's security, and has actually stated that on the uncommon celebrations he does not fly commercially he offsets his emissions.

But planemakers say events such as the furore over his schedule have added fresh obstacles for a market currently striving to validate its contribution to cutting business expenses.

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

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

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

Environmentalists and some experts remain skeptical that biojetfuels, generally combined 50-50 with kerosene, will make a considerable effect on public perceptions about high-end travel.

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

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

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

Corporate charter and specialists are likewise seeing more interest from customers who desire 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 business jet utilization study his company recently finished for a Fortune 500 company.

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