By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest industry program in Las Vegas high-end jets are enticing purchasers with their streamlined silhouettes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel producers and jetmakers are keen to showcase novel types of aviation fuel considered less hazardous to the environment, from used cooking oil to the distinctly less glamorous meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions could make service jets more attractive to ecologically conscious buyers - specifically corporations dealing with concerns over sustainability from shareholders or green campaign groups.

The schedule of less contaminating private jets might also spare the rich and well-known the unfavorable 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 consist of "fats, grease and oils that are by-products of the food industry," said Bryan Sherbacow, chief commercial officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our product is inedible."

Some of the other 79 airplane on display screen are expected to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall yearly carbon emissions globally, but can give off, typically, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has safeguarded his occasional usage of private jets to guarantee his family's safety, and has actually said that on the uncommon occasions he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his schedule have added fresh difficulties for an industry currently making every effort to validate its contribution to cutting business expenses.

"Incidents of flight shaming involving making use of personal jets are regrettable when you think about that our market has actually delivered fuel effectiveness improvements of 40% over the previous 40 years," said Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this airplane flies on renewable fuels" and organisers including alternative fuel pumps for checking out airplanes - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

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

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

Demand from company jet operators for eco-friendly 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, could broaden production approximately 150 million gallons by 2022.

Corporate charter companies and specialists are also seeing more interest from customers who want 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 function in a business jet usage study his company 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) chauffeur. But I believe individuals are becoming more aware of the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)