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 smooth silhouettes, plush cabins - and significantly, their usage of alternative fuels.

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

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

Their hope is that adopting eco-friendly fuel to curb emissions might make business jets more attractive to environmentally conscious buyers - particularly corporations dealing with questions over sustainability from shareholders or green project groups.

The availability of less polluting personal jets might also spare the rich and well-known the negative promotion experienced by Britain's Prince Harry and his spouse 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 current waste-based fuels consist of "fats, grease and oils that are by-products of the food industry," said Bryan Sherbacow, chief 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 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 overall annual carbon emissions globally, however can release, typically, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter company Victor.

Prince Harry has actually safeguarded his periodic usage of personal jets to guarantee his household's security, and has actually said that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his travel plan have actually added fresh difficulties for an industry already making every effort to validate its contribution to cutting corporate expenses.

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

Bombardier thinks increased sustainable fuel use 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 transformation - with jets sporting sticker labels like "this aircraft flies on sustainable fuels" and organisers including alternative fuel pumps for going to airplanes - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some analysts stay hesitant that biojetfuels, generally blended 50-50 with kerosene, will make a substantial influence on public perceptions about luxury travel.

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

Demand from company jet operators for 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 approximately 150 million gallons by 2022.

Corporate charter companies and consultants are also seeing more interest from clients who wish to purchase carbon credits to offset emissions from their flights.

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

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