By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest market program in Las Vegas luxury jets are drawing purchasers with their streamlined shapes, plush cabins - and progressively, their use of alternative fuels.

Fuel producers and jetmakers are eager to showcase unique kinds of aviation fuel deemed less harmful to the environment, from used cooking oil to the definitely less attractive meat waste.

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

Their hope is that embracing eco-friendly fuel to suppress emissions could make business jets more appealing to environmentally conscious purchasers - specifically corporations facing questions over sustainability from investors or green project groups.

The accessibility of less polluting personal jets could also spare the abundant and famous the negative 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 most current waste-based fuels include "fats, grease and oils that are byproducts of the food market," stated Bryan Sherbacow, chief business officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste utilized by Gulfstream.

"All of our item is inedible."

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

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions worldwide, but can release, usually, 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 defended his periodic use of personal jets to ensure his household's safety, and has said that on the unusual celebrations he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his travel plan have added fresh difficulties for a market currently aiming to validate its contribution to cutting corporate expenses.

"Incidents of flight shaming involving the use of personal jets are unfortunate when you think about that our market has actually provided fuel effectiveness improvements of 40% over the past 40 years," stated Bombardier Aviation President David Coleal.

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

But even an image transformation - with jets sporting stickers like "this aircraft flies on eco-friendly fuels" and organisers adding alternative fuel pumps for visiting airplanes - is not likely to please all critics at the Oct 22-24 high-end jet event.

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

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

Demand from business jet operators for eco-friendly 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 approximately 150 million gallons by 2022.

Corporate charter business and consultants are likewise seeing more interest from consumers who desire 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 study his business just recently finished for a Fortune 500 company.

"At the end of the day, I think that cost, cost per hour, variety, speed and performance, that's still the (sales) motorist. But I think people are ending up being more familiar with the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)