By Allison Lampert

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

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

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

Their hope is that embracing sustainable fuel to might make business jets more attractive to environmentally mindful buyers - particularly corporations dealing with concerns over sustainability from investors or green project groups.

The accessibility of less polluting personal jets could likewise spare the rich and well-known the unfavorable publicity experienced by Britain's Prince Harry and his spouse 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 consist of "fats, grease and oils that are byproducts of the food market," stated Bryan Sherbacow, chief commercial 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 expected to be powered by 150,000 gallons of other sustainable fuel mixes anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions worldwide, however can produce, on average, as much as 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has defended his occasional use of private jets to guarantee his household's safety, and has stated that on the unusual celebrations he does not fly commercially he offsets his emissions.

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

"Incidents of flight shaming involving using personal jets are unfortunate when you think about that our industry has actually provided fuel efficiency improvements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting stickers like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for visiting aircrafts - is not likely to please all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some experts stay skeptical that biojetfuels, normally mixed 50-50 with kerosene, will make a significant 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 service jet operators for renewable fuels now far goes beyond 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 consultants are likewise seeing more interest from consumers who want to purchase carbon credits to balance out emissions from their flights.

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

"At the end of the day, I believe that cost, expense per hour, variety, speed and performance, that's still the (sales) motorist. But I think individuals are ending up being more knowledgeable about the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)