By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market show in Las Vegas luxury jets are enticing buyers with their smooth silhouettes, plush cabins - and significantly, their use of alternative fuels.

Fuel manufacturers and jetmakers are keen to showcase novel types of aviation fuel deemed less damaging to the environment, from utilized cooking oil to the definitely less attractive meat waste.

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

Their hope is that embracing renewable fuel to suppress emissions might make service jets more attractive to ecologically conscious purchasers - specifically corporations facing concerns over sustainability from shareholders or green project groups.

The accessibility of less polluting personal jets could likewise spare the rich and famous the unfavorable promotion experienced by Britain's Prince Harry and his other half Meghan over a recent personal jet journey to southern France.

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

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

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions globally, however can emit, typically, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually safeguarded his periodic usage of personal jets to ensure his household's security, and has 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 schedule have included fresh challenges for an industry currently making every effort to validate its contribution to cutting business costs.

"Incidents of flight shaming including using personal jets are unfortunate when you think about that our market has delivered fuel effectiveness improvements of 40% over the past 40 years," stated 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 data, billionaires just have a 19% organization jet ownership rate.

But even an image remodeling - with jets sporting sticker labels like "this airplane flies on sustainable fuels" and organisers adding alternative fuel pumps for checking out airplanes - is not likely to satisfy all critics at the Oct 22-24 luxury jet occasion.

Environmentalists and some analysts stay hesitant that biojetfuels, normally mixed 50-50 with kerosene, will make a significant effect on public understandings about travel.

"No quantity of jatropha curcas or Brazil-nut fuel can make service jets look eco-friendly," stated aviation analyst Richard Aboulafia.

Demand from company 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, might expand production as much as 150 million gallons by 2022.

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

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

"At the end of the day, I believe that rate, expense per hour, range, speed and efficiency, that's still the (sales) chauffeur. But I think people are ending up being more knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)