By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world’s biggest market program in Las Vegas high-end jets are tempting purchasers with their smooth shapes, luxurious cabins - and significantly, their use of alternative fuels.

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

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

Their hope is that embracing renewable fuel to curb emissions might make organization jets more attractive to ecologically mindful purchasers - specifically corporations dealing with concerns over sustainability from shareholders or green campaign groups.

The schedule of less polluting personal jets might likewise spare the rich and popular the unfavorable publicity experienced by Britain’s Prince Harry and his partner Meghan over a recent private jet trip to southern France.

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

The latest include “fats, grease and oils that are byproducts of the food market,” said 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 expected to be powered by 150,000 gallons of other renewable fuel blends expected to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions globally, but can produce, on average, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has protected his periodic usage of personal jets to ensure his family’s safety, and has stated that on the uncommon events he does not fly commercially he offsets his emissions.

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

“Incidents of flight shaming involving using private jets are unfortunate when you consider that our market has actually provided fuel efficiency enhancements of 40% over the previous 40 years,” said Bombardier Aviation President David Coleal.

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

But even an image remodeling - with jets sporting sticker labels like “this airplane flies on eco-friendly fuels” and organisers adding alternative fuel pumps for going to airplanes - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some experts stay doubtful that biojetfuels, typically blended 50-50 with kerosene, will make a considerable effect on public understandings about luxury travel.

“No amount of jatropha curcas or Brazil-nut fuel can make company jets look eco-friendly,” said aviation analyst Richard Aboulafia.

Demand from company jet operators for sustainable 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 as much as 150 million gallons by 2022.

Corporate charter business and consultants are also seeing more interest from customers who wish to purchase carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions played a role in a business jet utilization study his company just recently completed for a Fortune 500 company.

“At the end of the day, I believe that cost, expense per hour, range, speed and efficiency, that’s still the (sales) motorist. But I think individuals are ending up being more aware of the sustainability of operations and how it impacts the planet.” (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)