Dietary fibre and health: the role of hydrogen production

AlphaCog

Member
Joined
Jan 28, 2014
Messages
90

Dietary fibre and health: the role of hydrogen production​

Abstract

The biological basis for the epidemiological association between high dietary fibre intakes and reduced disease incidence in Man is not fully understood. It is proposed that molecular hydrogen, produced in quite large amounts as a by-product of colonic fermentation of dietary fibre and unabsorbed carbohydrate may play an important role. Hydrogen in the tissues may act as a powerful reducing agent (antioxidant) of potentially damaging free radical species (e.g. singlet oxygen) and in so doing, along with other antioxidants would help in the control of these potentially damaging species and their known involvement in disease causation.


Vegetables by Nitrate

mg/100g:

beet 110
swiss chard 151
oak leaf lettuce 155
beet greens 177
basil 183
spring greens 188
butter leaf lettuce 200
cilantro 247
rhubarb 281
arugula 480


View: https://www.youtube.com/watch?v=cJffz_CRISI



 
Last edited:
OP
AlphaCog

AlphaCog

Member
Joined
Jan 28, 2014
Messages
90

Steam cooking significantly improves in vitro bile acid binding of collard greens, kale, mustard greens, broccoli, green bell pepper, and cabbage


Abstract

Bile acid binding capacity has been related to the cholesterol-lowering potential of foods and food fractions. Lowered recirculation of bile acids results in utilization of cholesterol to synthesize bile acid and reduced fat absorption. Secondary bile acids have been associated with increased risk of cancer. Bile acid binding potential has been related to lowering the risk of heart disease and that of cancer. Previously, we have reported bile acid binding by several uncooked vegetables. However, most vegetables are consumed after cooking. How cooking would influence in vitro bile acid binding of various vegetables was investigated using a mixture of bile acids secreted in human bile under physiological conditions. Eight replicate incubations were conducted for each treatment simulating gastric and intestinal digestion, which included a substrate only, a bile acid mixture only, and 6 with substrate and bile acid mixture. Cholestyramine (a cholesterol-lowering, bile acid binding drug) was the positive control treatment and cellulose was the negative control. Relative to cholestyramine, in vitro bile acid binding on dry matter basis was for the collard greens, kale, and mustard greens, 13%; broccoli, 10%; Brussels sprouts and spinach, 8%; green bell pepper, 7%; and cabbage, 5%. These results point to the significantly different (P < or = .05) health-promoting potential of collard greens = kale = mustard greens > broccoli > Brussels sprouts = spinach = green bell pepper > cabbage as indicated by their bile acid binding on dry matter basis. Steam cooking significantly improved the in vitro bile acid binding of collard greens, kale, mustard greens, broccoli, green bell pepper, and cabbage compared with previously observed bile acid binding values for these vegetables raw (uncooked). Inclusion of steam-cooked collard greens, kale, mustard greens, broccoli, green bell pepper, and cabbage in our daily diet as health-promoting vegetables should be emphasized. These green/leafy vegetables, when consumed regularly after steam cooking, would lower the risk of cardiovascular disease and cancer, advance human nutrition research, and improve public health.

Serum lipid and fecal bile acid changes with cereal, vegetable, and sugar-beet fiber feeding

Abstract

Thirty-four subjects consumed six controlled formula diets for 3 wk each, supplemented with 0 g added fiber, 10 and 30 g dietary fiber as wheat bran (WB), 10 and 30 g dietary fiber as mixed vegetable fiber (VF), and 30 g dietary fiber as sugar-beet fiber (SBF). Serum cholesterol changes for fiber free, 10 g WB, 30 g WB, 10 g VF, 30 g VF, and 30 g SBF (−0.13, −0.18, −0.05, −0.17, −0.24, and −0.70 mmol/L, respectively) were significant for 30 g VF and 30 g SBF. Reduction in total cholesterol with SBF was largely due to significant lowering of low-density-lipoprotein cholesterol. Total fecal bile acid concentrations were significantly higher with the fiber-free diet than with 30 g WB, VF, and SBF (P < 0.001) and were also higher with 30 g SBF than with 30 g WB and 30 g VF (P < 0.005). Daily fecal bile acid excretion was not different on 30 g SBF compared with 30 g WB and 30 g VF. Differences in cholesterol reduction across the diets could not be explained by differences in fecal bile acid excretion.
 
Last edited:

Perry Staltic

Member
Joined
Dec 14, 2020
Messages
8,186
Butyrate produced by bacterial fermentation of dietary fiber and resistant starches is the preferred fuel source of colonocytes, the cells that line the large intestine. Healthy colonocytes prevent a leaky gut. Ergo, dietary fiber is essential to keep endotoxins from leaking into the body. Butyrate also prevents/inhibits carcinogenesis.

 
OP
AlphaCog

AlphaCog

Member
Joined
Jan 28, 2014
Messages
90

Deriving leaf chlorophyll content of green-leafy vegetables from hyperspectral reflectance​

Five N treatments with 0 (N0), 0.033 (N1), 0.067 (N2), 0.100 (N3), 0.133 (N4) g N per kg soil were designed to create different chlorophyll content.

Chloropyll table.png

Chlorophyll content was lowest for lettuce with yellow green leaves and highest for pakchoi var. SHQ with dark green leaves when expressed on a fresh weight basis.

Chinese Cabbage variations:
chinese cabbage.jpg


Some of the potential benefits of chlorophyll include:

Anti-aging remedy​

Topical chlorophyll may work as an anti-aging remedy. A study found that applying a gel containing chlorophyllin to the skin reduced signs of photoaging, which is aging that results from sun exposure. The study used skin samples from four healthy women and lasted for 12 days.

The results of the study showed that skin treated with chlorophyllin improved in a similar way to skin treated with tretinoin, which is a prescription skin cream that has been proven to help with skin aging. The authors suggest that using a combination of chlorophyllin and tretinoin could be an effective treatment for reversing the signs of photoaged skin.

Acne treatment​

Topical chlorophyll may also have potential as an acne treatment.

One study found that a gel containing chlorophyllin helped reduce facial acne and large, visible pores. The 10 people who completed the study had mild to moderate acne and used the chlorophyllin gel for 3 weeks.

In another study, researchers compared using a combination of topical chlorophyll and phototherapy with phototherapy alone for the treatment of acne. The people who received the combination had fewer acne lesions, less severe acne, and less oily skin than those who did not. However, the 24 participants were all of Asian descent and had darker skin types, so the results may not be relevant for everybody.

Blood-building properties​

Chlorophyll is chemically similar to hemoglobin, a protein that is essential in red blood cells as it carries oxygen around a person’s body.

Researchers have suggested that wheatgrass juice, which is rich in chlorophyll, may be helpful in treating hemoglobin deficiency disorders, such as anemia and thalassemia.

Deodorant properties​

Chlorophyll may have odor-reducing properties.​

Researchers have studied chlorophyll for its potential as a deodorant for many years.

A study published in 1960 suggested that chlorophyll may reduce odors for people who have had a colostomy. Later, a study from 1989 found that chlorophyll was not effective in controlling odors in people who have had a colostomy. However, a 1980 study noted that chlorophyll improved lower body odor in older adults living in nursing homes.

Today, some deodorants and mouthwashes contain chlorophyll. Some people also take chlorophyll pills to help reduce body odors.

Wound-healing properties​

Researchers studied chlorophyll as an aid for wound healing in the 1940s and 1950s. Some of these studies suggested that chlorophyll may help heal surgical wounds and prevent infections.

More recently, a 2008 review suggested that a medication containing chlorophyllin promotes wound-healing and reduces odors. Some doctors prescribe this medication today.

Cancer treatment​

Chlorophyll has shown potential as a cancer treatment in some tests conducted on animals:

  • A 2015 review concluded that chlorophyllin might help prevent and slow cancer growth.
  • A study from 2005 found that natural chlorophyll reduced the risk of colon cancer in rats. The rats ate a diet high in red meat and low in green vegetables, which has associations with an increased risk of colon cancer. However, the authors did not see the same results for chlorophyllin.
  • A 2016 study found that chlorophyllin helped slow the progression of lung cancer in mice. The researchers administered the chlorophyllin to the mice in microscopic capsules known as nanocapsules.
 
Last edited:
Back
Top Bottom