By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry program in Las Vegas high-end jets are enticing purchasers with their smooth shapes, plush cabins - and increasingly, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to display unique forms 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 acquiesced environmental pressure on air travel and dedicated to cutting in half carbon by 2050 compared to 2005.

Their hope is that adopting renewable fuel to suppress emissions might make company jets more appealing to ecologically conscious purchasers - specifically corporations dealing with questions over sustainability from investors or green campaign groups.

The accessibility of less contaminating private jets could likewise spare the abundant and well-known the unfavorable publicity experienced 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 utilizing California-produced fuel from inedible beef tallow.

The current waste-based fuels include "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 product is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of overall yearly carbon emissions worldwide, but can discharge, on average, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has actually safeguarded his periodic use of personal jets to ensure his household's security, and has stated 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 included fresh obstacles for an industry currently striving to validate its contribution to cutting corporate costs.

"Incidents of flight shaming involving using personal jets are unfortunate when you think about that our market has delivered fuel performance 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 industry data, billionaires just have a 19% company jet ownership rate.

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

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

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

Demand from company jet operators for renewable fuels now far goes beyond supply and their interest could 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 specialists are likewise seeing more interest from customers who wish to buy 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 utilization research study his company just recently finished for a Fortune 500 company.

"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 think individuals are becoming more aware of the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)