By Allison Lampert

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

Fuel manufacturers and jetmakers are keen to display unique forms of aviation fuel deemed less damaging to the climate, from used cooking oil to the definitely less attractive meat waste.

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

Their hope is that adopting renewable fuel to suppress emissions might make service jets more appealing to ecologically conscious purchasers - especially corporations dealing with questions over sustainability from investors or green campaign groups.

The schedule of less polluting private jets could likewise spare the abundant and famous the negative promotion experienced by Britain's Prince Harry and his wife Meghan over a current private jet journey to southern France.

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

The most recent waste-based fuels consist of "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, chief commercial 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 anticipated to be powered by 150,000 gallons of other sustainable fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions internationally, however can produce, typically, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually defended his periodic usage of private jets to guarantee his household's security, and has 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 travel plan have included fresh difficulties for an industry currently striving to justify its contribution to cutting business costs.

"Incidents of flight shaming involving the use of personal jets are unfortunate when you consider that our market has actually delivered fuel performance improvements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

Bombardier thinks increased sustainable fuel use will assist the industry make inroads with corporations and rich buyers. According to industry data, billionaires just have a 19% company jet ownership rate.

But even an image remodeling - with jets sporting like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for visiting aircrafts - is unlikely to satisfy all critics at the Oct 22-24 high-end jet event.

Environmentalists and some analysts stay hesitant that biojetfuels, generally combined 50-50 with kerosene, will make a substantial effect on public understandings about high-end travel.

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

Demand from service jet operators for eco-friendly fuels now far surpasses supply and their interest might drive future production, Sherbacow said.

World Energy, which produces 40 million gallons of biofuel at its California plant, could expand production up to 150 million gallons by 2022.

Corporate charter business and consultants are likewise seeing more interest from customers who wish to purchase carbon credits to offset emissions from their flights.

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

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