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By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market show in Las Vegas luxury jets are enticing buyers with their streamlined silhouettes, plush cabins - and progressively, their use of alternative fuels.

Fuel manufacturers and jetmakers are keen to showcase novel forms of aviation fuel considered less harmful to the environment, from used cooking oil to the noticeably less attractive meat waste.

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

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

The accessibility of less 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 journey to southern France.

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

The most current waste-based fuels include "fats, grease and oils that are byproducts of the food market," said Bryan Sherbacow, primary industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on screen are anticipated to be powered by 150,000 gallons of other sustainable fuel blends expected to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions worldwide, however can emit, on average, as much as 20 times more carbon emissions per guest 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 stated that on the unusual celebrations he does not fly commercially he offsets his emissions.

But planemakers say occurrences such as the furore over his travel plan have included fresh obstacles for an industry already striving to validate its contribution to cutting corporate costs.

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

Bombardier believes increased sustainable fuel usage will help the market make inroads with corporations and wealthy purchasers. According to industry information, billionaires only have a 19% company 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 going to airplanes - is unlikely to please all critics at the Oct 22-24 high-end jet event.

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

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

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

World Energy, which produces 40 million gallons of biofuel at its California plant, might broaden production as much as 150 million gallons by 2022.

Corporate charter companies and experts are also seeing more interest from consumers who want to buy carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a corporate jet usage study his company recently finished for a Fortune 500 company.

"At the end of the day, I believe that cost, cost 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 affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)