Suppression

Peaches

Category: Food

Type

Voluntary

Introduction and description

Prunus persica - (L.)Batsch  Is the botanical name given to the Peach, Flowering Peach, Ornamental Peach, or Common Peach, in the family Rosaceae and also known as Amygdalis persicus or  Persica vulgaris.

The fruit has a fuzzy soft skin and inside a seed/stone.  If the skin is smooth, we give it the name of  nectarine, although nectarines and peaches are the same botanically.  The variety P. persica var. nucipersica (or var. nectarina), is the nectarine.  Several genetic studies have concluded nectarines are produced due to a recessive allele, whereas a fuzzy peach skin is dominant.  Some men are like this [sorry, my little joke].

The seed/nut can contain hydrogen cyanide, which at overdose levels is considered a poison.  In the first place, you do not eat the seed, you eat the flesh, as such you will suffer no harm, however, a homeopathically small amount of this chemical is in the flesh, where it has a beneficial effect, as it appears to help with the gut flora.

The plant is a native of China and China is still the biggest grower of peaches.  Wild trees in the Himalayas can yield as much as 36kg or so of fruit a year.   Fruits of the wild peach are richer in nutrients than the cultivated forms.

The peach is also symbolic, and is especially revered in eastern culture.

 Background

Peach flower, fruit, seed and leaves as illustrated
by Otto Wilhelm Thomé (1885).

A great many claims are made about the peach and its leaves and seed.  I am not going to repeat them.  Instead it is best if you look at the observations which have some scientific support for them.

But if you look at the nutritional content of the peach you should be able to see that it is a very nutritious food, very high in minerals and vitamins as well as many other nutrients.  You would need to take care about the omega-3, omega-6 fatty acid balance, but on the whole peaches are simply good for you, especially as they have a high vitamin C content.  It is quite likely that it is this high nutritional value, coupled with its ability to restore some of your gut flora, that has given it such a good reputation medicinally. 

There is another property of the peach rarely mentionned. 

What will be apparent if you look at the list below of chemical constituents,  is that this sample contained some heavy metals - lead and iron, for example.  The presence of these minerals is an indication that they were present in the soil, but it also means that the fruit of a peach is able to take up heavy metals.  Many plants will take up heavy metals in their leaf and root systems and stems or branches, but the fruit may remain free.  It appears that the fruit of the peach is not free and as such care should be taken on where the plant is grown and where you get your peaches from.  Italian peaches grown deep in the heart of the southern Italian contryside, for example, or Chinese peaches straight from the Himalayas, are probably heavy metal free; but peaches grown near some of the USA big cities may well not be, given the amount of lead that was once used in American gas guzzler cars.

Nectarines

Heavy metals for which our bodies have no use are shown in the table below in Red.  Note that in time, it may be found that some of these metals do have a use, feeding our intestinal eco-sysytem, but for the time being they are regarded as not needed and in some cases not wanted.

If we look at this in a positive way, the peach is a natural chelating agent.  If we can find an organically grown source of peaches, from an area free of toxins, we have a healing agent.

Chemical constituents

The following table was derived from Dr Duke's Plant database, it shows the chemical in a peach, or at least the sample used and the Lo ppm, Hi ppm.

 
Minerals - present in the peach are shown below in blue.  Vanadium is not present, but has a specialised, biochemical roles as structural or functional cofactors in other organisms, and is thus only possibly needed by humans.  Chloride  is also not present, nor is Iodine - so you would need to add some seaweed to your fruit salad [I jest].  The minerals present are:

As you can see a Peach is a very good source of essential minerals.

 

 

Vitamins - are shown in green.  A peach does not contain,  Vitamin B7 [also known as biotin],  Vitamin B12 [also known as cobalamin],  Vitamin D [also known as ergocalciferol], or  Vitamin K [also known as naphthoquinoids] although there seems to be some disagreement here in the various sources I looked at, some say it has.  Vitamin C content is high.

 

 

 Other miscellaneous nutrients - the lists of vitamins and mineral shown above are the generally accepted ones, but in addition to these we have a few unclassified nutrients.  Choline  is not present, [although there seems to be disagreement here among sources], it is a water-soluble essential nutrient. It must be consumed through the diet for the body to remain healthy.  Cyanide, in another form, is present, it has an essential role in very small doses in feeding our friendly bacteria.

 

Essential Fatty acids - are shown in pink.  ALA - α-Linolenic acid is not present, specifically, although the more general PUFA category may imply it is.  LA - Linoleic acid, an omega-6 fatty acid is present. 

Essential amino acids  are shown in violet.  Peaches do not contain Phenylalanine, and of the six amino acids considered conditionally essential in the human diet, cysteine is not present, nor is glutamine, although glutamic acid is.  But, Peaches do contain Serine, which is a precursor to several amino acids including glycine and cysteine.  It is also the precursor to numerous other metabolites, including sphingolipids and folate, as such although some essential amino acids are not directly present, the precursors are.

  • Isoleucine
  • Lysine
  •  
    Leucine
  • Methionine
  • Threonine
  • Tryptophan
  • Valine
  • Histidine
  • arginine
  • glycine
  • proline and
  • tyrosine.

 Given that manic depressives and schizophrenics are often given lithium and peaches appear to contain lithium, at least this sample did, perhaps these poor people should be given a peach a day to eat, instead of medication.

A-DECALACTONE , ,

ACETIC-ACID , ,

ALANINE , 420, 3402

ALPHA-TOCOPHEROL , 10, 86

ALUMINUM , 2.25, 1050

ANTHOCYANIDIN , ,

ARGININE , 180, 1458

ARSENIC , 0.001, 0.053

ASCORBIC-ACID , 14, 1127

ASH , 4000, 150000

ASPARTIC-ACID , 1170, 8586

BARIUM , 0.045, 30

BENZALDEHYDE , ,

BENZYL-ACETATE , ,

BENZYL-ALCOHOL , ,

BETA-CAROTENE , 0, 30

BORON , 1, 150

BROMINE , ,

CADMIUM , 0, 0.45

CALCIUM , 18, 8850

CARBOHYDRATES , 111000, 910000

CHROMIUM , 0.01, 2.25

CITRIC-ACID , ,

COBALT , 0.005, 0.45

COPPER , 0.3, 30

CYANIDIN-3-MONOGLUCOSIDE , ,

CYSTINE , 60, 486

ETHANOL , ,

ETHYL-ACETATE , ,

ETHYL-BENZOATE , ,

FAT , 860, 18000

FIBER , 6210, 162000

FLAVONOL-GLYCOSIDES , , 10

FLUORINE , 0.1, 0.8

FOLACIN , 0.031, 0.303

FORMIC-ACID , ,

GAMMA-HEPTALACTONE , ,

GAMMA-HEXALACTONE , ,

GAMMA-NONALACTONE , ,

GLUTAMIC-ACID , 1060, 8586

GLYCINE , 240, 1944

HEXANOIC-ACID , ,

HEXYL-ACETATE , ,

HEXYL-FORMATE , ,

HISTIDINE , 130, 1053

IRON , 1, 99

ISOLEUCINE , 200, 1620

ISOVALERIANIC-ACID , ,

L-MALIC-ACID , ,

LEAD , 0.3, 3

LEUCINE , 400, 3240

LINOLEIC-ACID , 440, 3565

LINOLENIC-ACID , 10, 80

LITHIUM , 0.06, 0.6

LUTEIN , 0.14, 2.8

LYCOPENE , ,

LYSINE , 230, 1863

 

MAGNESIUM , 68, 850

MALONIC-ACID , ,

MANGANESE , 0, 22.5

MERCURY , 0, 0.007

METHIONINE , 170, 1377

METHYL-ACETATE , ,

MOLYBDENUM , 0.1, 1.05

MUFA , 340, 2755

NIACIN , 10, 82

NICKEL , 0.15, 4.5

NITROGEN , 1400, 13075

OLEIC-ACID , 340, 2755

PALMITIC-ACID , 90, 730

PALMITOLEIC-ACID , 10, 80

PANTOTHENIC-ACID , 2, 14

PECTINS , , 8600

PENTANOIC-ACID , ,

PENTYL-ACETATE , ,

PHOSPHORUS , 90, 2000

PHYTIN-PHOSPHORUS , , 10

PHYTOSTEROLS , 100, 810

POTASSIUM , 1275, 22072

PROLINE , 290, 2349

PROTEIN , 6850, 63000

PUFA , 450, 3645

QUERCETIN-3'-GLUCOSIDE , ,

QUERCETIN-3-0-GALACTOSIDE , ,

QUERCETIN-3-0-RUTINOSIDE , ,

QUERCETIN-3-DIGLUCOSIDE , ,

QUERCETIN-3-O-RHAMNOSIDE , ,

RIBOFLAVIN , 1, 4

SELENIUM , 0, 0.003

SERINE , 320, 2592

SFA , 100, 810

SILICON , 4, 30

SILVER , 0.015, 0.3

SODIUM , 0, 366

STEARIC-ACID , 10, 80

STRONTIUM , 0.225, 45

SUCROSE , 20000, 100000

SULFUR , 3, 700

TANNIN , , 8000

THIAMIN , 1, 2

THREONINE , 270, 2187

TITANIUM , 0.075, 30

TRANS-2-HEXENYL-ACETATE , ,

TRYPTOPHAN , 20, 162

TYROSINE , 180, 1458

VALINE , 380, 3078

VIT-B-6 , 0.2, 1.6

WATER , 835000, 964000

ZEAXANTHIN , ,

ZINC , 0.45, 37.5

ZIRCONIUM , 0.3, 4.5

 

 

Method

The Hindu Grilled peach, apple and
feta cheese salad at Ruci & Idoni

Peaches are nicest eaten raw, all on their own, but they can be added successfully to salads, they can be made into a delicious jam, they can be grilled and served with mascarpone cheese, they can be used in a delicious chicken curry made with coconut milk.  They are delicious filled with cottage cheese and topped with nuts.  So in fact they are very versatile.

 

When fully ripe, the fruit of the best forms are very juicy with a rich delicious flavour”.  The flesh can be white, a rich yellow or even a dark rich red colour.  The red coloured flesh has just the hint of the taste of blood oranges.

Although I have concentrated on the fruit it is worth knowing that the leaves are used in France to produce an infused wine known as vin de pêche. This is created by blending peach leaves, brandy, red wine and sugar for 10 to 14 days until ready to drink. A recipe can be found using this LINK, the nutrient value will of course be different from the table above.

 

Related observations