By Allison Lampert

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

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

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

Their hope is that adopting sustainable fuel to suppress emissions could make company jets more appealing to environmentally conscious buyers - especially corporations dealing with concerns over sustainability from investors or green campaign groups.

The availability of less polluting private jets might likewise spare the rich and well-known the unfavorable promotion experienced by Britain's Prince Harry and his partner Meghan over a recent private 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," stated Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

Some of the other 79 aircraft 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 annual carbon emissions internationally, however can produce, usually, approximately 20 times more carbon emissions per mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has actually safeguarded his occasional usage of private jets to ensure his family's security, and has actually said that on the uncommon 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 challenges for a market already aiming to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming involving making use of private jets are regrettable when you consider that our industry has provided fuel performance 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 wealthy buyers. According to market information, billionaires only have a 19% business jet ownership rate.

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

Environmentalists and some analysts stay skeptical that biojetfuels, typically mixed 50-50 with kerosene, will make a significant impact on public perceptions about high-end travel.

"No quantity of Jatropha or Brazil-nut fuel can make business jets look eco-friendly," said aviation expert Richard Aboulafia.

Demand from company jet operators for sustainable 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 broaden production up to 150 million gallons by 2022.

Corporate charter business and experts are likewise seeing more interest from customers who desire 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 utilization study his company recently finished for a Fortune 500 business.

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