By Allison Lampert

LAS VEGAS, Oct 22 (Reuters) - At the world's biggest market show in Las Vegas high-end jets are enticing purchasers with their sleek shapes, plush cabins - and progressively, their use of alternative fuels.

Fuel manufacturers and jetmakers are eager to showcase unique types of air travel fuel considered less hazardous to the environment, from utilized cooking oil to the definitely less attractive meat waste.

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

Their hope is that adopting sustainable fuel to suppress emissions could make company jets more attractive to ecologically conscious buyers - particularly corporations facing concerns over sustainability from shareholders or green project groups.

The availability of less contaminating private jets might likewise spare the abundant and popular the negative promotion experienced by Britain's Prince Harry and his wife Meghan over a current personal jet trip 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 by-products of the food industry," stated Bryan Sherbacow, primary 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 screen are anticipated to be powered by 150,000 gallons of other sustainable fuel blends anticipated to be pumped at the program.

FLIGHT SHAMING

Private jets represent less than 0.1% of total annual carbon emissions globally, however can discharge, typically, up to 20 times more carbon emissions per guest mile than jetliners, according to the London-based private charter firm Victor.

Prince Harry has actually defended his periodic usage of personal jets to guarantee his family's safety, and has said that on the rare celebrations he does not fly commercially he offsets his emissions.

But planemakers state occurrences such as the furore over his itinerary have actually included fresh difficulties for an industry currently aiming to justify its contribution to cutting business expenses.

"Incidents of flight shaming including using private jets are unfortunate when you think about that our market has delivered fuel effectiveness enhancements of 40% over the previous 40 years," stated Bombardier Aviation President David Coleal.

Bombardier thinks increased sustainable fuel usage will assist the industry make inroads with corporations and rich purchasers. According to industry information, billionaires just have a 19% organization jet ownership rate.

But even an image transformation - with jets sporting sticker labels like "this airplane flies on eco-friendly fuels" and organisers including alternative fuel pumps for checking out planes - is unlikely to please all critics at the Oct 22-24 high-end jet occasion.

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

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

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

World Energy, which produces 40 million gallons of biofuel at its California plant, might expand production as much as 150 million gallons by 2022.

Corporate charter companies and specialists are likewise seeing more interest from clients who wish to credits to offset emissions from their flights.

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

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