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By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest industry show in Las Vegas luxury jets are drawing buyers with their streamlined silhouettes, luxurious cabins - and significantly, their usage of alternative fuels.

Fuel manufacturers and jetmakers are keen to showcase novel kinds of aviation fuel considered less damaging to the environment, from used cooking oil to the noticeably less glamorous meat waste.

Business jet operators, like airline companies, have bowed to ecological 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 curb emissions might make service jets more appealing to ecologically conscious purchasers - specifically corporations dealing with questions over sustainability from investors or green campaign groups.

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

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

The most recent waste-based fuels include "fats, grease and oils that are byproducts of the food market," stated Bryan Sherbacow, chief business officer of Boston-based biofuel manufacturer World Energy, which produces fuel from meat waste used by .

"All of our item is inedible."

A few of the other 79 airplane on display are expected to be powered by 150,000 gallons of other renewable fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets account for less than 0.1% of total yearly carbon emissions internationally, however can discharge, on average, as much as 20 times more carbon emissions per guest mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has protected his periodic usage of private jets to ensure his family's security, and has actually stated that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers say events such as the furore over his itinerary have added fresh challenges for a market currently making every effort to validate its contribution to cutting business expenses.

"Incidents of flight shaming involving making use of private jets are regrettable when you consider that our industry has actually delivered fuel effectiveness improvements of 40% over the past 40 years," said Bombardier Aviation President David Coleal.

Bombardier believes increased sustainable fuel usage will assist the market make inroads with corporations and rich buyers. According to industry 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 eco-friendly fuels" and organisers including alternative fuel pumps for going to aircrafts - is not likely to satisfy all critics at the Oct 22-24 high-end jet occasion.

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

"No amount of Jatropha or Brazil-nut fuel can make business jets look eco-friendly," said aviation analyst Richard Aboulafia.

Demand from service jet operators for eco-friendly fuels now far goes beyond supply and their interest could drive future production, Sherbacow said.

World Energy, which produces 40 million gallons of biofuel at its California plant, could 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 offset emissions from their flights.

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

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