By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's greatest industry show in Las Vegas luxury jets are tempting purchasers with their smooth silhouettes, plush cabins - and progressively, their usage of alternative fuels.

Fuel producers and jetmakers are keen to showcase novel forms of air travel fuel considered less hazardous to the environment, from utilized cooking oil to the clearly less attractive meat waste.

Business jet operators, like airlines, have acquiesced environmental pressure on aviation and dedicated to halving carbon emissions by 2050 compared with 2005.

Their hope is that adopting renewable fuel to suppress emissions could make organization jets more attractive to environmentally conscious buyers - specifically corporations dealing with concerns over sustainability from investors or green campaign groups.

The schedule of less polluting private jets might also spare the abundant and popular the negative promotion experienced by Britain's Prince Harry and his better half Meghan over a recent personal jet journey to southern France.

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

The most recent waste-based fuels include "fats, grease and oils that are byproducts of the food market," said 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 screen 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 yearly carbon emissions internationally, but can produce, usually, up to 20 times more carbon emissions per traveler mile than jetliners, according to the London-based personal charter firm Victor.

Prince Harry has actually safeguarded his occasional usage of private jets to ensure his family's safety, and has said that on the rare events he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his travel plan have actually included fresh difficulties for an industry currently aiming to justify its contribution to cutting business costs.

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

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

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

Environmentalists and some experts stay hesitant that biojetfuels, normally combined 50-50 with kerosene, will make a substantial effect on public understandings about high-end travel.

"No quantity of jatropha curcas or Brazil-nut fuel can make service jets look eco-friendly," stated air travel expert Richard Aboulafia.

Demand from business jet operators for eco-friendly fuels now far exceeds supply and their interest could drive future production, Sherbacow said.

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 consultants are likewise seeing more interest from clients 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 usage research study his company 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 knowledgeable about the sustainability of operations and how it impacts the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)