By Allison Lampert

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

Fuel manufacturers and jetmakers are keen to display unique types of aviation fuel considered less harmful to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

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

Their hope is that adopting eco-friendly fuel to curb emissions might make business jets more attractive to ecologically mindful buyers - specifically corporations facing questions over sustainability from investors or green campaign groups.

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

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

The latest waste-based fuels consist of "fats, grease and oils that are by-products of the food industry," said Bryan Sherbacow, primary industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our product is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of overall yearly carbon emissions worldwide, but can release, usually, as much as 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter .

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

But planemakers state occurrences such as the furore over his schedule have included fresh challenges for an industry already aiming to validate its contribution to cutting business costs.

"Incidents of flight shaming involving the usage of private jets are regrettable when you consider that our market has provided fuel effectiveness improvements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image remodeling - with jets sporting stickers like "this aircraft flies on sustainable fuels" and organisers adding alternative fuel pumps for checking out aircrafts - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts stay hesitant that biojetfuels, normally mixed 50-50 with kerosene, will make a considerable influence on public perceptions about high-end travel.

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

Demand from service jet operators for sustainable 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, could broaden production up to 150 million gallons by 2022.

Corporate charter companies and consultants are likewise seeing more interest from customers who want to buy carbon credits to balance out emissions from their flights.

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

"At the end of the day, I think that rate, expense per hour, range, 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 world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)