By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market program in Las Vegas luxury jets are enticing buyers with their sleek shapes, luxurious cabins - and progressively, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to display unique forms of aviation fuel considered less hazardous to the environment, from used cooking oil to the definitely less glamorous meat waste.

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

Their hope is that embracing eco-friendly fuel to curb emissions could make service jets more appealing to environmentally conscious purchasers - particularly corporations facing concerns over sustainability from investors or green project groups.

The schedule of less polluting personal jets might likewise spare the abundant and well-known the unfavorable promotion experienced by Britain's Prince Harry and his spouse Meghan over a recent personal jet journey to southern France.

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

The newest 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 producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

A few of the other 79 airplane on screen are anticipated to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions worldwide, but can discharge, usually, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually safeguarded his periodic usage of jets to ensure his family's security, and has actually stated that on the unusual events he does not fly commercially he offsets his emissions.

But planemakers say incidents 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 involving using personal jets are unfortunate when you think about that our market has actually delivered fuel efficiency improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel usage will assist 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 remodeling - with jets sporting sticker labels like "this airplane flies on sustainable fuels" and organisers adding alternative fuel pumps for checking out airplanes - is not likely to please all critics at the Oct 22-24 high-end jet event.

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

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

Demand from business 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 approximately 150 million gallons by 2022.

Corporate charter business and specialists are likewise seeing more interest from customers who want to purchase 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 usage research study his company recently finished for a Fortune 500 business.

"At the end of the day, I think that cost, cost per hour, range, speed and performance, that's still the (sales) driver. But I think people are ending up being more conscious of the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)