By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to showcase novel forms of air travel fuel deemed less damaging to the environment, from used cooking oil to the clearly less attractive meat waste.

Business jet operators, like airline companies, have bowed to environmental pressure on aviation 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 organization jets more appealing to environmentally conscious purchasers - specifically corporations dealing with concerns over sustainability from shareholders or green campaign groups.

The accessibility of less polluting personal jets could likewise spare the rich and famous the negative publicity experienced by Britain's Prince Harry and his partner Meghan over a current 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 current waste-based fuels consist of "fats, grease and oils that are by-products of the food market," said Bryan Sherbacow, chief industrial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our item is inedible."

Some of the other 79 aircraft on display are anticipated to be powered by 150,000 gallons of other eco-friendly fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions globally, however can discharge, on average, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter firm Victor.

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

But planemakers say events such as the furore over his travel plan have added fresh difficulties for an industry already striving to validate its contribution to cutting corporate costs.

"Incidents of flight shaming involving using private jets are regrettable when you think about that our market has delivered fuel effectiveness enhancements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this aircraft 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 luxury jet event.

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

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

Demand from organization jet operators for renewable fuels now far exceeds 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 as much as 150 million gallons by 2022.

Corporate charter business and specialists are likewise seeing more interest from customers who wish 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 just recently finished for a Fortune 500 company.

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