By Allison Lampert

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

Fuel producers and jetmakers are eager to showcase unique types of air travel fuel deemed less hazardous to the climate, from utilized cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airline companies, have acquiesced environmental pressure on air travel and committed to cutting in half carbon emissions by 2050 compared with 2005.

Their hope is that adopting renewable fuel to curb emissions might make business jets more appealing to ecologically conscious purchasers - especially corporations dealing with concerns over sustainability from shareholders or green project groups.

The accessibility of less polluting personal jets could likewise spare the rich and popular the unfavorable promotion 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 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 industry," said Bryan Sherbacow, chief commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

A few of the other 79 aircraft on display screen are anticipated to be powered by 150,000 gallons of other sustainable fuel mixes anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of overall yearly carbon emissions worldwide, but can emit, typically, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter company Victor.

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

But planemakers state events such as the furore over his schedule have actually added fresh challenges for an industry already striving to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming including the usage of 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 wealthy purchasers. According to industry information, billionaires only have a 19% company jet ownership rate.

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

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

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

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

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

Corporate charter companies and consultants are also seeing more interest from customers who wish to buy 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 finished for a Fortune 500 business.

"At the end of the day, I think that rate, expense per hour, range, speed and efficiency, that's still the (sales) driver. But I think people 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)