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What Are The Differences Between THCa vs THC?

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orthene:
https://www.rxleaf.com/what-are-the-health-benefits-of-thca-vs-thc/

Cannabinoids found in raw cannabis are receiving attention for their potential medicinal properties.
Beyond the most popular and prevalent cannabinoids, tetrahydrocannabinol (THC) and cannabidiol (CBD), there are dozens of other compounds worth scientific exploration. Many experts believe these secondary compounds also have important medicinal value. Some of the lesser known cannabinoids are tetrahydrocannabinolic acid (THCa) and cannabidiolic acid (CBDa). And while all cannabinoids share structural similarities, there are important differences for THCa vs THC. The same goes for CBDa vs CBD. While these may be similar in form, they have key molecular differences that impacts medicinal value.

What do we Know About THCa vs THC?
THCa is the acidic precursor to THC. It is a cannabinoid existing almost exclusively within live and freshly harvested cannabis plants.

As a naturally occurring cannabinoid, THCa quickly degrades into THC after exposure to heat, UV light, or oxygen. This process either happens over time as the plant material dries or rapidly, during processing.

The official name for the purposeful process of transformation is called decarboxylation. Decarbing, as it’s commonly called, is the activation of THC through vaping, smoking, and baking (all types of heat). This degradation structurally changes the molecule, and THCa loses its carboxyl group (the acid) to transform into activated compounds.

The longer cannabis stays in storage, the more THCa converts to THC. This means that even raw cannabis may cause intoxication if it has been sitting there long enough. Patients looking to access THCa in the highest levels will need live-resin products, fresh plant material, and properly cured fresh flower.

What is CBDa?
Very similar to THCa, CBDa is the parent cannabinoid to CBD. Strains advertised as CBD-rich were technically rich in CBDa first. Decarboxylation (heat, oxygen, and UV rays) transforms the acidic, fresh cannabinoid into its activated form: CBD.

Molecularly, the difference between CBDa vs CBD also comes down to the loss of its carboxyl group. The precursor cannabinoid is most prevalent in fresh plants, properly cured CBD-rich flower, and live-resins, just like THCa.

Understanding Potency: What does THCa on Labeling Mean?
If labels were 100 percent accurate, all flower would indicate THCa ratios – not just THC. But, most labels only state THC content. This may be because consumers might not understand how to turn THCa and THC into a final potency. In addition, this conversion rate can be unpredictable.

However technical it may seem, it’s still inaccurate to leave THCa off the labeling. This is also the case with CBDa vs CBD on product labels. For simplicity’s sake, however, producers and dispensaries typically forgo the technicalities of THCa and CBDa.

Calculating the total THC from THCa is not straightforward. The formula (Total THCa x 0.877 + total THC) is not user-friendly.

What are the Benefits of THCa vs THC?
At the time of writing, there were few well-controlled studies on THCa vs THC (or CBDa vs CBD). In fact, researchers have only completed very preliminary work on either acidic cannabinoid. However, like their more famous cannabinoid cousins, both THCa and CBDa also influence the endocannabinoid system. These regulate symptoms related to inflammation, memory, mood, the sensation of pain, and gastrointestinal processes.

The following is a summary of the research on THCa:

In 2013, the British Journal of Pharmacology published, “Tetrahydrocannabinolic acid reduces nausea-induced conditioned gaping in rats and vomiting in Suncus murinus.” This in-vivo animal study demonstrated how “THCa potently reduced” nausea-related behavior and vomiting in rat and mouse models.[1]
Five years later (also in the British Journal of Pharmacology), came the study, “Tetrahydrocannabinolic acid is a potent PPARγ agonist with neuroprotective activity.” The scientists behind this paper investigated several cannabinoids for their neuroprotective capacity within a Petri dish.[2]
Scientific Application
The promising cannabinoids, including THCa, were then further applied to mouse-models. Their results indicated THCa had “potent neuroprotective activity. This is worth considering for the treatment of Huntington’s disease and possibly other neurodegenerative and neuroinflammatory diseases.”

In 2017 came the study, “Anti-Inflammatory Activity in Colon Models Is Derived from Δ9-Tetrahydrocannabinolic Acid That Interacts with Additional Compounds in Cannabis Extracts,” published in the pages of the Journal of Cannabis Cannabinoid Research.[3]

The team behind the in-vitro study looked at cannabis extracts on epithelial cells and on colon tissues to determine the potential for the treatment of inflammatory bowel diseases, like Crohn’s and ulcerative colitis. Their early work discovered cannabis extracts containing THCa were most effective, at least in the laboratory.

What About CBDa vs CBD?
What about the benefits of CBDa? To date, there is even less known about the possible medical applications of CBDa. The early work is as follows:

In 2014, the authors of “Cannabidiolic Acid, a Major Cannabinoid in Fiber-Type Cannabis, is an Inhibitor of MDA-MB-231 Breast Cancer Cell Migration,” published their findings on the anti-tumor characteristics of CBDa. They discovered “for the first time” that CBDa effectively reduced the migration of aggressive breast cancer cell lines.[4]
In the British Journal of Pharmacology, the article “Cannabidiolic Acid Prevents Vomiting in Suncus Murinus and Nausea-Induced Behaviour in Rats by Enhancing 5-HT1A Receptor Activation,” detailed how CBDa reduced symptoms of nausea in mouse models of the condition.[5]
As the latest addition to the body of work, in 2019, researchers laid out early details about how CBDa may reduce seizures in a paper “Pharmacokinetics of Phytocannabinoid Acids and Anticonvulsant Effect of Cannabidiolic Acid in a Mouse Model of Dravet Syndrome.”[6]

How to Get the Most Medicinal Value Out of THCa and CBDa
Both CBDa and THCa are sensitive to heat, oxygen, and UV rays. As such, they are more challenging to capture for medicinal applications. The traditional methods of smoking, vaping, and baking are too harsh to protect the volatile nature of these acidic cannabinoids.

Patients must strictly control the heat exposure during consumption to reap the medicinal value without destroying these sensitive cannabinoids. One of the easiest ways is to vaporize fresh flower within a user-controlled dry-herb vaporizer (Ex: The Volcano, Pax). Investigate lab results before consumption and pre-set the temperature as follows:

THC: 311 to 315 °F / 155 to 157 °C
THCa: 220 °F / 105 °C
CBD: 320 to 356 °F / 160 to 180 °C
CBDa: 248 °F/ 120+ °C

A Bright Future for Minor Cannabinoids
THCa and CBDa represent just the tip of the proverbial cannabinoid iceberg. With hundreds of compounds, including terpenes and flavonoids, the cannabis plant has so much left to unravel.

In the future, experts will have a better understanding when comparing the medical benefits of THC vs THCa. It is still early days in the world of cannabinoid research.

Quite a lengthy article, but a lot of good information here. To follow the numbered citations/references, please follow the top link to the original article.

BurnMan:
When Vape cartridges first came out they were decent quality cannabis oil the was Not decarbed so it was THCa until it was vaped and converted instantly to THC.

The disadvantage then being the PG and VG that had to be a carrier in order for these  early vapes to work correctly.

The good thing back then was that the oil itself was unadulterated which is the form PRC still uses for medicinal purposes.


As vapes evolved, so did the oil with the beginnings of it killing and injuring a lot of consumers with the vitamin E acetate

and other "Plant based" poisonous fillers.



Here we are now in 2022.

Oil is no longer recognizable and has very little to no earth taste from the roots it came from.

Instead everyone wants the terpenes associated with strains but are only getting the flavors

and not the entourage effects from the individual strains. It like reading the ingredients

off a box of cookies, mixing them in a bowl with no instructions at the cellular level,

and expecting cookies to appear once you stop mixing.



These distillates are all about being decarbed and 99. blah blah% pure.

The terpenes that are now added to get these solid plastic -like distillate to flow along

with whatever terpenes are added for smell and taste are what could mean the difference

in a healthy or toxic experience.

Even with a vendor with a good rep, sometimes they get a bad batch of supplies from bad

coils with loose metal, terpenes that are too concentrated and are toxic at the levels of

industrial acid cleaners, mouth pieces that are supposed to be ceramic and are really

pressed Masonite. (You read right ..pressed Masonite dipped in clear epoxy) from  knock-off black market

blank cartridges.

Old school vape cartridges were advertised as having THC which was seemingly a mistake because they had THCa

and almost no THC for those in the know.

The THC was an estimate of what levels it would turn into once decarbed, or just blatant false advertising.

Who wants a cartridges with 70% THCa when you can get one cheaper with 90% THC?


ME!   that is a real conversion.

As time is going by, PRC now does decarb all vape oil. This is so the end user doesn't have

to run their oil rig on high eat and still get a decent , grounded cannabis oil experience and taste, not full of added

thinners or terpenes.  It is also that a lot of people are discovering that certain larger tanks and coil combos

allow them to have a lot of oil ready to vape with no cartridge hassles.

PRC oil had to keep up with the viscosity needed to do this.

Instead of using terpenes and thinners, De-carbing not only knocks out a Co2

molecule, it makes the oil thinner by nature.

PRC has a lot in store for us folks in a lot of pain to help us all live fuller lives

by helping people get their strength and mobility back using safe alternative

medicines and good pain management practices. :weedspin

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