Short answer. Yes. Article 2139 imports the last paragraph of Article 2085 into antichresis, which lets a third person who is not a party to the principal obligation secure it with their own property. So you can constitute an antichresis over your land to guarantee someone else's debt, just as you could pledge or mortgage it for them.
What the law says
The last paragraph of article 2085, and articles 2089 to 2091 are applicable to this contract.
Civil Code, Article 2139 — Common Provisions Applied. Read the full provision →
What the law says
Third persons who are not parties to the principal obligation may secure the latter by pledging or mortgaging their own property.
Civil Code, Article 2085 — Essential Requisites of Pledge and Mortgage. Read the full provision →
Antichresis borrows rules built for pledge and mortgage
Antichresis lets a creditor collect the fruits of a debtor's real property and apply them to interest and then principal, but the Code does not rewrite every rule for it from scratch. Article 2139 simply imports specific provisions written for pledge and mortgage, the last paragraph of Article 2085, and Articles 2089 through 2091, directly into antichresis.
That borrowing is what lets a third-party security arrangement, originally written for pledge and mortgage, apply equally to antichresis.
Securing someone else's debt with your own land
The imported rule from Article 2085 says a third person who is not a party to the principal obligation may secure it by pledging or mortgaging their own property. Because Article 2139 pulls that rule into antichresis, the same third person can instead let a creditor take the fruits of their land to satisfy someone else's debt.
This is useful for a parent, relative, or business partner who wants to back another person's loan with land they own, without transferring ownership or taking on personal liability for the debt itself.
Indivisibility and conditional debts carry over too
Articles 2089 through 2091, also imported by Article 2139, mean an antichresis is indivisible in the same way a pledge or mortgage is, a partial payment does not free part of the land from the arrangement, and antichresis can secure a conditional or future obligation, not just a debt that is already fixed and due.
In other words, the third-party landowner takes on the same indivisible, flexible security relationship that a pledgor or mortgagor would.
What the third-party owner is risking
Because the land itself generates the fruits the creditor collects, the risk to a third-party landowner is losing the use and income of that land until the secured debt is paid, and ultimately the land itself if the debt is never satisfied and the creditor pursues judicial sale.
That risk is the same trade-off a third party accepts when pledging or mortgaging property for someone else - it is just paid in fruits and possession here instead of an immediate auction of a movable.