By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry program in Las Vegas are enticing buyers with their smooth silhouettes, luxurious cabins - and progressively, their use of alternative fuels.

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

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

Their hope is that embracing sustainable fuel to suppress emissions might make company jets more appealing to ecologically mindful purchasers - specifically corporations dealing with concerns over sustainability from investors or green project groups.

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

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

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

"All of our product is inedible."

Some of the other 79 airplane on display are anticipated to be powered by 150,000 gallons of other eco-friendly fuel mixes expected to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions worldwide, but can give off, typically, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

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

But planemakers say incidents such as the furore over his travel plan have included fresh difficulties for an industry currently aiming to validate its contribution to cutting corporate expenses.

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

Bombardier thinks increased sustainable fuel usage will assist the industry make inroads with corporations and wealthy buyers. According to market information, billionaires only have a 19% organization jet ownership rate.

But even an image remodeling - with jets sporting sticker labels like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for visiting aircrafts - is unlikely to satisfy all critics at the Oct 22-24 luxury jet event.

Environmentalists and some analysts remain hesitant that biojetfuels, normally mixed 50-50 with kerosene, will make a substantial impact on public understandings about luxury travel.

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

Demand from service jet operators for renewable fuels now far surpasses supply and their interest could drive future production, Sherbacow stated.

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

Corporate charter business and experts are also seeing more interest from clients who desire to purchase carbon credits to offset emissions from their flights.

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

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