Do you live near an oil refinery and notice a bad smell in the air between October and January? This deadly aroma comes from Alpechin. But do you know what it is? Learn what’s behind the term, why it smells the way it does, and what it’s used for today.
What does Alpechin mean?
Olives are more than just oil: they also contain water, pulp, juice, fiber… So when olives are ground and centrifuged, three things separate out: the oil itself, the solid residue (with skins, bones, pulp residue…) and the dark liquid. So, The final watery residue is what is called alpechín. And, despite this description, there is nothing “residue” about it. To give you an idea of volume, according to research, roughly every kilogram of ground olives yields between 0.5 and 1.5 liters of alpechín.
What is the residue of olives called?
Now that you know what alpechín is, maybe you’ve realized that you know the concept, but by another name. This is very possible because not always using the same word;This depends largely on the geographical area where you live. For example, other names for alpechín are amurca, murga or morga, aguachas, tinaco or jámila.
This may also be the case You would associate alpechín with orujo or alperujo, although they are not exactly the same. Pomace holds together only the solid remains of the olive, a paste of skin, bones and pulp. Alperujo, on the other hand, refers to the combination of dry and liquid residue, that is, it contains everything except the olive oil after the grinding process is complete.
ORUJO (dry waste) + ALPECHÍN (liquid waste) = ALPERUJO
Why does Alpecin smell so bad?
Of course, what pomace, alperujo and alpechín have in common is that they all have a strong, foul-smelling, very unpleasant smell. This is because it contains pulp residues, pectin substances, emulsified fats, phenolic compounds, organic acids, salts, minerals… The entire chemical mixture is breaking down. This is why there is a sour smell of putrefactionwhich is characteristic of fermented olives. Did you know that alpechín comes from Latin? Enterococcus faecalistranslated as “from the scum”? Very vivid, yes.
What does alpechin do? Purpose and possibility of reuse
Furthermore, this degradation affects more than just the sense of smell. If the Alps pile up unchecked on the ground, It is a highly polluting elementthereby causing harmful effects on soil, rivers and ecosystems. Therefore, direct discharge of such waste into the environment is currently strictly prohibited. However, with the right treatment, alpechín can develop into: fun outing.
Compost or organic fertilizer
One of the most successful uses in recent years has been the conversion of alpechin into compost. It is combined with manure, plant debris or trimmings to become compost or fertilizer. In this way, nutrients and organic matter can be recycled for agronomic purposes. Of course: you have to be careful; the phenols and compounds in alpechín can be phytotoxic, and the salinity is high, so it’s not worth going crazy with the additions. Dosage, soil type and pretreatment counts.
energy production
There are also projects seeking Use Alpechin as biofuel. It uses supercritical water thermal gasification to generate hydrogen from this wet waste, which could provide a sustainable alternative for olive growing regions. However, the technical challenges are significant because its composition makes it difficult to treat.
Treatment of contaminated water
At the same time, the utilization of Alpechin by-products is also deepening Treat contaminated water. To this end, magnetic nanoparticles are produced from olive pomace that help eliminate pesticides or heavy metals. This is an environmental application that uses waste to promote sustainable development.
bioactive supplements
alpechín contains more than fifty phenolic compounds, that is, antioxidants and natural anti-inflammatory agents, such as hydroxytyrosol, tyrosol and other flavonoids. Why not take advantage of this potential? In this sense, research in recent years has mainly focused on Extraction of these beneficial compounds and their effects Used simultaneously in cosmeticssuch as providing nutrition through dietary supplements or bioactive foods.
Why do you care about this topic? Spain produces huge amounts of olive oil. this means Each event generates millions of cubic meters of Alpechin. Poor management represents environmental, social and economic risks. But revaluing it can Convert it from problematic waste into useful raw materials: More sustainable, more circular and more respectful of the environment.
If you are interested in learning more about real-life examples of value addition or sustainable strategies in the oil industry, We invite you to explore more resources Hispaniola Bloga reference brand for its commitment to quality, innovation and sustainability.
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