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Vegetables from Taiwan

Jiang-gua (Taiwanese fermented cucumber)醬瓜

Jiang-gua (fermented cucumbers) is a popular traditional fermented food in Taiwan. A 2012 study isolated 103 lactic acid bacteria from jiang-gua samples and raw cucumbers. Samples made without soy sauce were dominated by Weissella cibaria and Leuconostoc lactis, and soy-sauce samples by Lactobacillus pentosus and L. plantarum.

A short entry: the sources we found record only what is said here about Jiang-gua itself. Its own sources do not record how it is made, so the steps and scenes below are those of Oiji (salt-brined whole cucumbers), the closest documented vegetables ferment, shown as a guide to the method, not as a record of Jiang-gua.

Short entryVegetables

Recipe

No fixed amounts recordedWhat goes in, as the sources describe it.
CucumbersThe raw substrate; 33 of the 103 lactic acid bacteria in the study came from the raw cucumbers[s1]
Soy sauce (some samples)Samples with it were dominated by different bacteria than samples without it[s1]

Total time across the steps of Oiji (salt-brined whole cucumbers): 2.5 days – 6 days

Start
Drag the bar or press Play
shapes, not to countWeissella cibariaLeuconostoc lactisLactobacillus pentosusL. plantarum

What changes: Whole cucumbers are packed in a jar and held down with a stone

Step 1 of 5 · steps of Oiji (salt-brined whole cucumbers)
Pack whole cucumbers in a jar and weight them with a stone
Time
Not documented
Temperature
Not documented
Salt
None given
Acidity
Not documented
Which microbes the steps name, step by step
Weissella cibaria
Leuconostoc lactis
Lactobacillus pentosus
L. plantarum

Output: cucumbers packed tight.

Flavour
Not documented
Texture
Not documented
Colour
Not documented

Microbes at work in this step

Not documented for this step.

Method

Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source

At a glance

Jiang-gua (fermented cucumbers) is a popular traditional fermented food in Taiwan. A 2012 study isolated 103 lactic acid bacteria from jiang-gua samples and raw cucumbers. Samples made without soy sauce were dominated by Weissella cibaria and Leuconostoc lactis, and soy-sauce samples by Lactobacillus pentosus and L. plantarum. Weissella cibaria and Leuconostoc lactis, the main bacteria in samples made without soy sauce and Lactobacillus pentosus and L. plantarum, the main bacteria in soy-sauce samples do most of the fermenting.

What makes this one different

Whether soy sauce is added decides which lactic acid bacteria dominate (Chen et al. 2012).

Related ferments

Variants

  • Soy-sauce jiang-guaSoy sauce added; the main bacteria are L. pentosus and L. plantarum.
  • Jiang-gua without soy sauceThe main bacteria are Weissella cibaria and Leuconostoc lactis.

History and sources

Every number is labelled with how it is known. How this atlas is made

  1. [s1] Chen Y.-S., Wu H.-C., Lo H.-Y., Lin W.-C., Hsu W.-H., Lin C.-W., Lin P.-Y. and Yanagida F. 2012, Isolation and characterisation of lactic acid bacteria from jiang-gua (fermented cucumbers), a traditional fermented food in Taiwan, Journal of the Science of Food and Agriculture 92(10), 2069–2075 (abstract via Europe PMC)paper