By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas luxury jets are tempting buyers with their streamlined silhouettes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel producers and jetmakers are eager to display novel kinds of air travel fuel considered less harmful to the environment, from used cooking oil to the definitely less glamorous meat waste.

Business jet operators, like airlines, have bowed to ecological pressure on air travel and committed to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that embracing eco-friendly fuel to suppress emissions might make company jets more appealing to environmentally mindful purchasers - especially corporations facing concerns over sustainability from investors or green campaign groups.

The schedule of less contaminating personal jets might likewise spare the abundant and famous the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a current private jet trip to southern France.

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

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

"All of our item is inedible."

A few of the other 79 aircraft 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 overall yearly carbon emissions globally, however can release, typically, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually defended his occasional use of personal jets to guarantee his household's safety, and has said that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers say events such as the furore over his travel plan have included fresh difficulties for a market currently aiming to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming including making use of personal jets are regrettable when you consider that our market has provided fuel performance improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image makeover - with jets sporting sticker labels like "this aircraft flies on sustainable fuels" and organisers including alternative fuel pumps for checking out planes - is unlikely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some experts stay hesitant that biojetfuels, normally combined 50-50 with kerosene, will make a substantial influence on public perceptions about luxury travel.

"No quantity of jatropha curcas or Brazil-nut fuel can make business jets look eco-friendly," stated 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, could expand production approximately 150 million gallons by 2022.

Corporate charter business and specialists are also seeing more interest from clients who want to purchase carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a business jet utilization study his business just recently finished for a Fortune 500 business.

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