BEIJING, Nov. 15 (Xinhua) -- Europe's promising judoka Caroline Lantoine claimed the first gold medal of the ongoing 2007 Beijing Judo Open here on Thursday, as the Frenchwomen won all her four matches on the first day of the "Good Luck Beijing " Olympic test event.

The former European junior champion, who turns 25 years old a week later, has been taken only 39 seconds to beat Brazil's Erika Miranda with an ippon at the final of the women's 52kg category.

Lantoine firstly made her name known by the world in 2000 when she was crowned in Nicosia at the European Junior Championships, also in the women's half-lightweight category, before she took the European Under-23 Championships title in 2004.

Her latest honors were made in world cups held by the world judo governing body, the International Judo Federation, with two runner-up finishes from respectively the event in Minsk last month and in Lisbon last May.

Miranda, just 20 years old, is not a weak rival, however, as the Brazilian came here with a fresh silver medal won at last July's Pan American Games in Rio de Janeiro besides a world cup title she took from February's world cup in Vienna.

Earlier in the evening, Xiao Jun, last year's Chinese national judo championships winner at the women's 48kg event, choked her opponent of Mongolian Bundmaa Munkhbaatar to claim an ippon win at the women's 52kg category third-place match in Group A, settling for a bronze medal after making back to the third-place final from repechage.

Her fellow Chinese Li Hongye, another repechage surviver, missed her chance to earn another bronze for the hosts in the same category after losing to Russian Natalia Kuzyutina with only a koka against a waza-ari and a yuko from the opponent in Group B.