By Allison Lampert

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

Fuel producers and jetmakers are eager to showcase unique kinds of aviation fuel considered less harmful to the environment, from used cooking oil to the distinctly less attractive meat waste.

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

Their hope is that embracing sustainable fuel to curb emissions could make organization jets more attractive to environmentally mindful buyers - particularly corporations facing concerns over sustainability from investors or green campaign groups.

The schedule of less contaminating private jets might also spare the abundant and well-known the unfavorable publicity experienced by Britain's Prince Harry and his spouse Meghan over a current personal jet journey to southern France.

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

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

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of overall annual carbon emissions internationally, however can discharge, usually, approximately 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually protected his periodic usage of private jets to guarantee his family's security, and has said that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers say occurrences such as the furore over his travel plan have added fresh obstacles for a market currently making every effort to justify its contribution to cutting corporate expenses.

"Incidents of flight shaming including making use of personal jets are unfortunate when you think about that our industry has delivered fuel efficiency improvements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for checking out aircrafts - is unlikely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts remain skeptical that biojetfuels, generally blended 50-50 with kerosene, will make a significant impact on public understandings about luxury travel.

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

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

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

Corporate charter business and specialists are also seeing more interest from customers who want to buy carbon credits to offset emissions from their flights.

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

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