By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market program in Las Vegas high-end jets are tempting purchasers with their smooth shapes, luxurious cabins - and significantly, their use of alternative fuels.

Fuel producers and jetmakers are keen to display unique types of air travel fuel considered less harmful to the climate, from utilized cooking oil to the clearly less glamorous meat waste.

Business jet operators, like airline companies, have actually acquiesced environmental pressure on aviation and devoted to cutting in half carbon emissions by 2050 compared to 2005.

Their hope is that embracing eco-friendly fuel to suppress emissions could make service jets more attractive to ecologically mindful purchasers - especially corporations facing concerns over sustainability from investors or green campaign groups.

The availability of less polluting personal jets could also spare the abundant and well-known the negative promotion experienced by Britain's Prince Harry and his other half Meghan over a current private jet journey to southern France.

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

The current waste-based fuels include "fats, grease and oils that are byproducts of the food market," stated Bryan Sherbacow, primary commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized 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 mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions internationally, however can discharge, typically, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has defended his periodic use of private jets to ensure his household's security, and has actually said that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his schedule have actually included fresh difficulties for an industry already making every effort to justify its contribution to cutting business costs.

"Incidents of flight shaming including using personal jets are unfortunate when you think about that our industry has provided fuel effectiveness enhancements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image remodeling - with jets sporting sticker labels like "this airplane flies on renewable fuels" and organisers adding alternative fuel pumps for going to planes - is unlikely to please all critics at the Oct 22-24 luxury jet occasion.

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

"No amount of jatropha curcas or Brazil-nut fuel can make business jets look eco-friendly," said air travel expert Richard Aboulafia.

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

World Energy, which produces 40 million gallons of biofuel at its California plant, might expand production approximately 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 contributed in a corporate jet usage study his company recently completed for a Fortune 500 business.

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