By Allison Lampert

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

Fuel manufacturers and jetmakers are eager to showcase unique kinds of aviation fuel deemed less damaging to the climate, from utilized cooking oil to the clearly less attractive meat waste.

Business jet operators, like airlines, have bowed to ecological pressure on aviation and committed to halving carbon emissions by 2050 compared to 2005.

Their hope is that embracing eco-friendly fuel to suppress emissions could make service jets more attractive to environmentally conscious buyers - especially corporations dealing with concerns over sustainability from investors or green project groups.

The availability of less contaminating private jets could likewise spare the abundant and popular the unfavorable promotion experienced by Britain's Prince Harry and his wife Meghan over a current private jet journey 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 by-products of the food market," stated Bryan Sherbacow, chief industrial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total yearly carbon emissions internationally, however can discharge, on average, approximately 20 times more carbon emissions per guest mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually protected his occasional use of private jets to ensure his family's security, and has stated that on the uncommon events he does not fly commercially he offsets his emissions.

But planemakers say occurrences such as the furore over his schedule have actually included fresh difficulties for an industry already making every effort to justify its contribution to cutting business expenses.

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

Bombardier believes increased sustainable fuel usage will help the market make inroads with corporations and rich purchasers. According to industry data, billionaires only have a 19% company jet ownership rate.

But even an image makeover - with jets sporting sticker labels like "this airplane flies on sustainable fuels" and organisers including alternative fuel pumps for going to aircrafts - is not likely to please all critics at the Oct 22-24 luxury jet occasion.

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

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

Demand from organization jet operators for eco-friendly fuels now far surpasses 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 up to 150 million gallons by 2022.

companies and experts are likewise seeing more interest from customers who wish to purchase carbon credits to offset emissions from their flights.

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions contributed in a corporate 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, variety, speed and performance, that's still the (sales) motorist. But I believe people are ending up being more familiar with the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)