By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry show in Las Vegas high-end jets are enticing buyers with their smooth shapes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel manufacturers and jetmakers are keen to showcase novel kinds of aviation fuel deemed less to the environment, from used cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airline companies, have 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 curb emissions could make company jets more appealing to ecologically mindful purchasers - particularly corporations dealing with concerns over sustainability from investors or green campaign groups.

The accessibility of less polluting personal jets might likewise spare the abundant and popular the negative publicity experienced by Britain's Prince Harry and his other half Meghan over a current personal jet journey to southern France.

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

The most recent waste-based fuels consist of "fats, grease and oils that are byproducts of the food industry," stated Bryan Sherbacow, primary industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 airplane on display 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 overall annual carbon emissions globally, but can discharge, on average, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

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

But planemakers state events such as the furore over his itinerary have added fresh challenges for a market already aiming to justify its contribution to cutting business costs.

"Incidents of flight shaming including using personal jets are unfortunate when you consider that our industry has actually delivered fuel efficiency enhancements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel usage will assist the market make inroads with corporations and rich buyers. According to market data, billionaires only have a 19% service jet ownership rate.

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

Environmentalists and some analysts remain hesitant that biojetfuels, generally combined 50-50 with kerosene, will make a considerable influence on public perceptions about luxury travel.

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

Demand from service jet operators for renewable fuels now far surpasses supply and their interest could drive future production, Sherbacow said.

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

Corporate charter business and experts are also seeing more interest from customers who wish 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 business jet usage research study his company recently finished for a Fortune 500 company.

"At the end of the day, I believe that rate, expense per hour, variety, speed and performance, that's still the (sales) motorist. But I think individuals are becoming more mindful of the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)