By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry program in Las Vegas luxury jets are enticing purchasers with their sleek shapes, luxurious cabins - and progressively, their usage of alternative fuels.

Fuel producers and jetmakers are eager to showcase novel types of air travel fuel deemed less damaging to the climate, from used cooking oil to the noticeably less glamorous meat waste.

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

Their hope is that embracing renewable fuel to curb emissions might make service jets more appealing to ecologically conscious buyers - especially corporations dealing with concerns over sustainability from investors or green project groups.

The availability of less contaminating personal jets could likewise spare the rich and famous the negative publicity experienced by Britain's Prince Harry and his better half Meghan over a recent 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 by-products of the food market," said 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."

A few of the other 79 aircraft on display screen are expected to be powered by 150,000 gallons of other renewable fuel mixes anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions internationally, however can discharge, on average, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter firm Victor.

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

But planemakers say occurrences such as the furore over his itinerary have added fresh obstacles for an industry already striving to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming involving the use of private jets are unfortunate when you consider that our industry has provided fuel performance improvements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

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

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

Environmentalists and some experts stay doubtful that biojetfuels, normally blended 50-50 with kerosene, will make a considerable impact on public understandings about high-end travel.

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

Demand from service jet operators for renewable fuels now far goes beyond supply and their interest could 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 consumers who wish to purchase carbon credits to offset emissions from their flights.

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

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