Pyrus spp

I-Lactic acid (= 2-Hydroxypropionic acid) (carboxylic acid) accumulation in anaerobic muscle shown by Sir Frederick Musa spp. (banana) (Musaceae), Papaver somniferum (Papaveraceae), Malus domestica (apple), Pyrus communis (pear) (Rosaceae), Vitis vinifera (Vitaceae) [fruit] Digitalis purpurea (Scrophulariaceae) Sour (acid) taste... 

The simplest phenolic n-glucoside is arbutin (p-hydroxyphenyl /3-d-glucopyranoside), which occurs in a number of plant species, including the pear Pyrus communis. Arbutin is usually accompanied in plant tissues by methylarbutin (p-methoxyphenyl S-D-glucopyranoside)Salix and Populus spp. contain the D-glucoside salicin, o-(hydroxymethyl)-phenyl /S-D-glucopyranoside, and certain species of poplar contain also a... 

Pea, Pisum sativum, 50, 578 Peach, Prunus persica, 202 Peanut, Arachis hypogea, 796 Pear, Pyrus communis, 202, 303 Pepper, Piper spp., 297 Pine... 

Occurs free in wild mallow. Also isol. from coffee beans, Corylus spp., Aconitum napellus, apple (Pyrus malus) and other plants. Sol. H2O. 

Examples of simple phenols (Ce) include catechol and phloroglucinol. Although most of the more complex plant polyphenols contain these two simple phenols as a parts of their stracmres, catechol and phloroglucinol are uncommon in plant tissues. Catechol has been found in leaves of Gaultheria species, while phloroglucinol has been found as glucoside in the peel of various Citrus fruits. Arbutin (III) is found in leaves of various Vaccinium spp., such as bluebeny, cranberry, cowberry, and pear trees (Pyrus communis L., Rosaceae) [41-43]. 

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