By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest industry program in Las Vegas high-end jets are drawing buyers with their sleek silhouettes, plush cabins - and increasingly, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to display novel forms of aviation fuel deemed less damaging to the environment, from utilized cooking oil to the clearly less glamorous meat waste.

Business jet operators, like airline companies, have acquiesced ecological pressure on aviation and committed to halving carbon emissions by 2050 compared with 2005.

Their hope is that embracing sustainable fuel to curb emissions could make business jets more appealing to environmentally conscious purchasers - particularly corporations dealing with concerns over sustainability from investors or green project groups.

The accessibility of less contaminating personal jets might likewise spare the rich 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 screen 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 industry," said Bryan Sherbacow, chief business officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our product is inedible."

Some of the other 79 airplane on display are expected to be powered by 150,000 gallons of other eco-friendly fuel mixes anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions internationally, but can emit, typically, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based personal charter firm Victor.

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

But planemakers state occurrences such as the furore over his itinerary have actually included fresh obstacles for a market currently making every effort to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming including the use of personal jets are unfortunate when you think about 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 use will assist the industry make inroads with corporations and wealthy purchasers. According to market data, billionaires only have a 19% service jet ownership rate.

But even an image makeover - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers including alternative fuel pumps for going to planes - is not likely to satisfy all critics at the Oct 22-24 high-end jet event.

Environmentalists and some experts stay hesitant that biojetfuels, usually mixed 50-50 with kerosene, will make a substantial influence 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 service jet operators for eco-friendly 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 business and experts are likewise seeing more interest from clients who want to buy carbon credits to offset emissions from their flights.

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

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