By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant industry program in Las Vegas high-end jets are luring purchasers with their smooth shapes, luxurious cabins - and significantly, their use of alternative fuels.

and jetmakers are keen to showcase unique types of air travel fuel deemed less damaging to the environment, from used cooking oil to the noticeably less attractive meat waste.

Business jet operators, like airlines, have actually acquiesced environmental pressure on air travel and committed to halving carbon emissions by 2050 compared with 2005.

Their hope is that adopting sustainable fuel to suppress emissions could make service jets more appealing to environmentally conscious buyers - particularly corporations dealing with questions over sustainability from shareholders or green campaign groups.

The schedule of less contaminating private jets could also spare the abundant and well-known the unfavorable promotion experienced by Britain's Prince Harry and his spouse Meghan over a recent personal jet journey to southern France.

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

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

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets account for less than 0.1% of overall annual carbon emissions internationally, but can emit, typically, as much as 20 times more carbon emissions per passenger mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has defended his periodic use of personal jets to guarantee his household's safety, and has stated that on the unusual events he does not fly commercially he offsets his emissions.

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

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

Bombardier thinks increased sustainable fuel use will help the market make inroads with corporations and wealthy purchasers. According to industry information, billionaires just have a 19% organization jet ownership rate.

But even an image makeover - with jets sporting stickers like "this aircraft flies on renewable fuels" and organisers including alternative fuel pumps for visiting planes - is not likely to please all critics at the Oct 22-24 luxury jet event.

Environmentalists and some experts remain doubtful that biojetfuels, usually mixed 50-50 with kerosene, will make a considerable effect on public understandings about luxury travel.

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

Demand from business jet operators for renewable 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 broaden production as much as 150 million gallons by 2022.

Corporate charter business and consultants are likewise seeing more interest from consumers who wish to purchase carbon credits to balance out emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, said emissions contributed in a business jet utilization research study his company recently finished for a Fortune 500 business.

"At the end of the day, I think that price, cost per hour, range, speed and efficiency, that's still the (sales) chauffeur. But I think people are becoming more mindful of the sustainability of operations and how it impacts the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)