By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas luxury jets are tempting purchasers with their streamlined shapes, luxurious cabins - and increasingly, their usage of alternative fuels.

Fuel manufacturers and jetmakers are keen to showcase unique types of aviation fuel considered less hazardous to the environment, from utilized cooking oil to the distinctly less attractive meat waste.

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

Their hope is that embracing sustainable fuel to suppress emissions might make organization jets more attractive to ecologically conscious buyers - especially corporations dealing with concerns over sustainability from investors or green project groups.

The availability of less contaminating personal jets could likewise spare the abundant and popular the negative publicity by Britain's Prince Harry and his other half Meghan over a current private jet trip 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 market," stated Bryan Sherbacow, primary industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our product is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions internationally, however can release, on average, 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 defended his occasional usage of personal jets to ensure his family's safety, and has actually said that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers state incidents such as the furore over his travel plan have actually included fresh obstacles for a market already making every effort to validate its contribution to cutting business expenses.

"Incidents of flight shaming including using personal jets are unfortunate when you think about that our industry has delivered fuel performance enhancements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting sticker labels like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for visiting aircrafts - is not likely to satisfy all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some analysts remain skeptical that biojetfuels, typically combined 50-50 with kerosene, will make a significant effect on public perceptions about high-end travel.

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

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

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

Corporate charter companies and consultants are likewise seeing more interest from consumers 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 corporate jet utilization research study his company just recently completed for a Fortune 500 business.

"At the end of the day, I believe that price, expense per hour, variety, speed and efficiency, that's still the (sales) driver. But I believe people are becoming more conscious of the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)