By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry show in Las Vegas high-end jets are tempting purchasers with their sleek silhouettes, luxurious cabins - and progressively, their usage of alternative fuels.

Fuel manufacturers and jetmakers are eager to display unique types of air travel fuel deemed less hazardous to the climate, from used cooking oil to the noticeably less glamorous meat waste.

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

Their hope is that embracing sustainable fuel to curb emissions could make organization jets more attractive to ecologically conscious purchasers - particularly corporations dealing with questions over sustainability from investors or green project groups.

The availability of less contaminating personal jets might likewise spare the abundant and well-known the negative publicity experienced by Britain's Prince Harry and his wife Meghan over a recent private jet journey to southern France.

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

The latest waste-based fuels include "fats, grease and oils that are byproducts of the food industry," stated Bryan Sherbacow, chief business 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 airplane on screen are expected to be powered by 150,000 gallons of other eco-friendly fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions internationally, but can emit, typically, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually safeguarded his occasional use of private jets to ensure his family's security, and has actually stated that on the uncommon occasions he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his itinerary have added fresh obstacles for a market already aiming to justify its contribution to cutting business expenses.

"Incidents of flight shaming including making use of personal jets are regrettable when you consider that our industry has actually delivered fuel efficiency improvements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

Bombardier thinks increased sustainable fuel usage will help the market make inroads with corporations and rich buyers. According to industry information, billionaires just have a 19% organization jet ownership rate.

But even an image remodeling - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers adding alternative fuel pumps for checking out airplanes - is unlikely to please all critics at the Oct 22-24 high-end jet event.

Environmentalists and some experts remain skeptical that biojetfuels, usually combined 50-50 with kerosene, will make a significant effect on public understandings about luxury travel.

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

Demand from company jet operators for renewable fuels now far exceeds supply and their interest might drive future production, Sherbacow stated.

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 specialists are likewise 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 contributed in a corporate jet usage research study his company recently completed for a Fortune 500 company.

"At the end of the day, I think that rate, cost per hour, variety, speed and efficiency, that's still the (sales) driver. But I think individuals are becoming more familiar with the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)