By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest market show in Las Vegas high-end jets are tempting purchasers with their smooth shapes, plush cabins - and progressively, their usage of alternative fuels.

Fuel producers and jetmakers are eager to showcase unique forms of aviation fuel deemed less damaging to the environment, from used cooking oil to the definitely less attractive meat waste.

Business jet operators, like airline companies, have actually acquiesced ecological pressure on aviation and dedicated to halving carbon emissions by 2050 compared with 2005.

Their hope is that embracing renewable fuel to curb emissions could make business jets more attractive to ecologically conscious buyers - specifically corporations facing questions over sustainability from shareholders or green campaign groups.

The availability of less contaminating personal jets could also spare the rich and famous the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a recent personal jet journey to southern France.

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

The newest waste-based fuels consist of "fats, grease and oils that are by-products of the food market," stated Bryan Sherbacow, primary commercial 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 sustainable fuel blends anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions globally, however can discharge, usually, as much as 20 times more carbon emissions per guest mile than jetliners, according to the London-based personal charter company Victor.

Prince Harry has safeguarded his occasional usage of private jets to ensure his family's security, and has said 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 difficulties for a market currently striving to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming including the use of private jets are unfortunate when you consider that our market has actually 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 industry make inroads with corporations and rich buyers. According to market data, billionaires just have a 19% company jet ownership rate.

But even an image remodeling - with jets sporting stickers like "this aircraft flies on eco-friendly fuels" and organisers including alternative fuel pumps for visiting planes - is unlikely to satisfy all critics at the Oct 22-24 high-end jet occasion.

Environmentalists and some experts remain doubtful that biojetfuels, normally mixed 50-50 with kerosene, will make a substantial influence on public perceptions about luxury travel.

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

Demand from service jet operators for sustainable fuels now far goes beyond supply and their interest might drive future production, Sherbacow stated.

World Energy, which produces 40 million gallons of biofuel at its California plant, could expand production as much as 150 million gallons by 2022.

Corporate charter business and experts are also seeing more interest from consumers who want to buy 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 cost, expense per hour, variety, speed and efficiency, that's still the (sales) driver. But I think people are ending up being more familiar with the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)