By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry show in Las Vegas luxury jets are enticing purchasers with their sleek shapes, plush cabins - and increasingly, their usage of alternative fuels.

Fuel producers and jetmakers are eager to display unique types of air travel fuel considered less hazardous to the environment, from used cooking oil to the clearly less glamorous meat waste.

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

Their hope is that adopting renewable fuel to suppress emissions might make company jets more appealing to ecologically mindful purchasers - particularly corporations dealing with concerns over sustainability from investors or green campaign groups.

The accessibility of less contaminating private jets could also spare the rich and famous the unfavorable publicity experienced by Britain's Prince Harry and his partner Meghan over a current private jet trip to southern France.

Five Gulfstream jets on 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 byproducts of the food industry," said Bryan Sherbacow, primary business officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

A few of the other 79 airplane on display are anticipated to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions worldwide, however can give off, usually, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter company Victor.

Prince Harry has actually protected his periodic use of private jets to guarantee his family's safety, and has actually stated that on the rare events he does not fly commercially he offsets his emissions.

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

"Incidents of flight shaming involving the usage of private jets are regrettable when you consider that our industry has provided fuel effectiveness improvements of 40% over the previous 40 years," said 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% organization jet ownership rate.

But even an image makeover - with jets sporting stickers like "this airplane flies on sustainable fuels" and organisers including alternative fuel pumps for checking out airplanes - is not likely to please all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some experts remain skeptical that biojetfuels, typically mixed 50-50 with kerosene, will make a substantial impact on public understandings about high-end travel.

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

Demand from business 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 broaden production up to 150 million gallons by 2022.

Corporate charter companies and consultants are likewise 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 played a role in a corporate jet utilization research study his company just recently finished for a Fortune 500 business.

"At the end of the day, I believe that rate, cost per hour, variety, speed and performance, that's still the (sales) chauffeur. But I think individuals are ending up being more aware of the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)