By Allison Lampert

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

Fuel manufacturers and jetmakers are keen to display unique forms of aviation fuel deemed less hazardous to the environment, from utilized cooking oil to the definitely less glamorous meat waste.

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

Their hope is that adopting renewable fuel to curb emissions might make business jets more appealing to environmentally mindful purchasers - specifically corporations dealing with questions over sustainability from shareholders or green campaign groups.

The schedule of less contaminating private jets might likewise spare the rich and well-known the negative publicity experienced by Britain's Prince Harry and his partner Meghan over a current private jet journey to southern France.

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

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

"All of our item is inedible."

A few of the other 79 airplane on screen are anticipated to be powered by 150,000 gallons of other eco-friendly fuel blends anticipated to be pumped at the show.

FLIGHT SHAMING

Private jets account for less than 0.1% of overall yearly carbon emissions globally, however can give off, on average, up to 20 times more carbon emissions per passenger mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has safeguarded his periodic usage of personal jets to guarantee his family's security, and has stated that on the rare occasions he does not fly commercially he offsets his emissions.

But planemakers state events such as the furore over his itinerary have actually added fresh challenges for a market already aiming to justify its contribution to cutting business costs.

"Incidents of flight shaming involving using personal jets are regrettable when you think about that our industry has actually provided fuel efficiency enhancements 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 wealthy purchasers. According to industry information, billionaires only have a 19% company jet ownership rate.

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

Environmentalists and some analysts remain doubtful that biojetfuels, typically mixed 50-50 with kerosene, will make a significant influence on public understandings about luxury travel.

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

Demand from company jet operators for eco-friendly fuels now far surpasses supply and their interest could drive future production, Sherbacow stated.

World Energy, which produces 40 million gallons of biofuel at its California plant, might broaden production up to 150 million gallons by 2022.

Corporate charter companies and consultants are also 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 business jet usage research study his company just recently completed for a Fortune 500 business.

"At the end of the day, I believe that price, cost per hour, variety, speed and efficiency, that's still the (sales) chauffeur. But I think individuals are ending up being more knowledgeable about the sustainability of operations and how it affects the planet." (Reporting By Allison Lampert, Editing by Tim Hepher and Alexandra Hudson)