By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's most significant market show in Las Vegas luxury jets are drawing buyers with their streamlined shapes, luxurious cabins - and increasingly, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to display unique types of air travel fuel deemed less hazardous to the environment, from used cooking oil to the distinctly less glamorous meat waste.

Business jet operators, like airlines, have bowed to environmental pressure on air travel and devoted to cutting in half carbon emissions by 2050 compared to 2005.

Their hope is that embracing eco-friendly fuel to suppress emissions might make organization jets more appealing to environmentally conscious buyers - specifically corporations dealing with questions over sustainability from investors or green project groups.

The accessibility of less contaminating private jets might also spare the rich and famous the negative publicity experienced by Britain's Prince Harry and his wife Meghan over a current private jet trip to southern France.

Five Gulfstream jets on display screen in Las Vegas are using 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," said Bryan Sherbacow, chief commercial officer of Boston-based biofuel producer World Energy, which produces fuel from meat waste used by Gulfstream.

"All of our product is inedible."

Some of the other 79 airplane 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 globally, but can release, typically, approximately 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has protected his occasional usage of private jets to guarantee his family's safety, and has actually stated that on the unusual occasions he does not fly commercially he offsets his emissions.

But planemakers say incidents such as the furore over his travel plan have added fresh difficulties for a market already striving to validate its contribution to cutting business costs.

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

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

But even an image transformation - with jets sporting sticker labels like "this airplane 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 stay doubtful that biojetfuels, generally mixed 50-50 with kerosene, will make a significant influence on public understandings about high-end travel.

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

Demand from organization jet operators for renewable fuels now far goes beyond supply and their interest could drive future production, Sherbacow said.

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 companies and experts are also seeing more interest from consumers who desire to buy carbon credits to balance out emissions from their .

Brian Proctor, CEO of Mente Group, a U.S. consultancy, stated emissions played a function in a business jet usage study his business just recently finished for a Fortune 500 business.

"At the end of the day, I believe that price, expense per hour, range, speed and performance, that's still the (sales) driver. But I think individuals are becoming more knowledgeable about the sustainability of operations and how it affects the world." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)